TW201021037A - Information recording medium and recording/reproduction apparatus - Google Patents

Abstract

An information recording medium according to the present invention includes a track on which a data sequence including a plurality of recording marks and a plurality of spaces provided between the plurality of recording marks is recordable; and a recording condition recording area in which a recording condition for recording the data sequence on the track is recordable. Where recording mark which is included in the data sequence and is to be formed on the track based on the recording condition is a first recording mark, when a length of the first recording mark is longer than a prescribed length, the recording condition is classified using a combination of the length of the first recording mark and a length of a first space located adjacently previous or subsequent to the first recording mark, and when the length of the first recording mark is equal to or shorter than the prescribed length, the recording condition is classified using a combination of the length of the first recording mark, the length of the first space, and a length of a second space not located adjacent to the first space and located adjacent to the first recording mark.

Description

201021037 VI. Description of the Invention: [Technical Field] The present invention relates to an information recording medium for recording optical information and a S recording and reproducing device, and particularly relates to an adjustable recording condition, and An information recording medium and a recording and reproducing device that stably realize high-density recording. [Front ^^ Chair J Background Art Various recordable information recording media have been put into practical use in order to record video or record sound, store computer data, and the like. For example, a CD that is mainly used for recording sounds or storing computer data, a DVDe for recording video images or storing computer data, in recent years, a professional video can record high-definition high-definition video BD (Blu -ray Disc). The aforementioned information on images, sounds, or computer data is recorded on the information recording medium as user data. Specifically, first, the user's tribute is attached with a correction error code, and is converted into a data column composed of recording marks and intervals having a predetermined range length. The data is recorded on the track of the information recording medium using a light beam. Further, the information recorded on the information recording medium emits a light beam on the track, and generates a analog reproduction signal from the reflected light including the corresponding data column, that is, from the reflected light including the information corresponding to the recording mark and the interval. The data column of the digital signal is generated from the reproduced signal, and after decoding, the user data is obtained by implementing the error correction. Fig. 1 shows various signals for forming a recording mark on an information recording medium. Part (a) of Figure 1 shows the channel clock signal of period Tw, which is 3 201021037 as the reference signal for recording data. Part (b) of Figure 1 shows the NRZI (Non Return to Zero Inverting) signal, which is a modulation code that modulates the information to be recorded based on the channel clock signal. For example, in the case of BD, the NRZI signal is obtained by modulating the information to be recorded by using the recording marks and intervals of the length 2T (2xTw) to 8T with the period Tw as a reference. Part (b) of Fig. 1 shows a pattern of 2T mark-2T interval-4T mark as a part of the NRZI signal. Parts (c) and (d) of Fig. 1 show the recording pulse trains of the recorded lasers generated based on the NRZI signals and the data columns (recording marks) formed on the information recording medium. The record marks of each length are formed by a record pulse train containing at least an initial pulse wave (also referred to as a first pulse wave). The length corresponding to the record mark may further include a last pulse wave and one or more intermediate pulse waves between the initial pulse wave and the last pulse wave. The pulse width Ttop of the initial pulse wave and the pulse width Tip of the last pulse wave are set corresponding to the length of the recording mark. The pulse width Tmp of the intermediate pulse wave is the same in the record marks of any length. Recording the level of the pulse train, that is, the laser intensity, can be classified into a peak power Pp2〇l having a heating effect necessary for forming a recording mark, a bottom power Pb202 having a cooling effect, and a cooling power Pc203, and spacing The interval power Ps204 of the recording power. The peak power Pp2〇1, the bottom power Pb202, the cooling power Pc203, and the interval power Ps204 are set based on the quenching level 205 detected when the laser light is quenched. Further, the bottom power Pb 202 and the cooling power PC 2 〇 3 are usually set to be equal to the laser power. However, in order to adjust the heat amount of the terminal portion of the mark, the 201021037 cooling power Pc203 may be set to a value different from the bottom power pb2〇2. Further, since the spacer does not need to form a recording mark, the general interval power Ps204 is set to a low laser power (e.g., equivalent to the reproducing power or the bottom power). However, in a rewritable type optical disc (for example, a DVD-RAM or a BD-RE), there is a need to erase an existing recording mark to form a spacer. Further, in a recordable type optical disc (e.g., DVD-R or BD-R), there is a case where the preheating power for forming the next recording mark is given. Therefore, the interval power Ps204 can also be set to a higher laser power. However, even in this case, the interval power Ps204 is not set to a value higher than the peak power pp2〇l. The recording mark formed in the case of irradiating a predetermined power laser depends on the characteristics of the information recording layer of the information recording medium. Therefore, laser light-emitting conditions suitable for recording of the information recording layer, such as the respective laser power values and pulse widths of the pulse train, are recorded on the information recording medium. Therefore, if each of the laser power and the pulse width of the recording pulse wave which has been recorded in the information recording medium can be appropriately reproduced, a record symbol column can be formed. However, the characteristics of the information recording layer of the information recording medium and the laser emission characteristics of the recording device are inconsistent with each information recording medium and each recording device. Also, with the use of the environment, the effects of heat are different. Further, there is a case where thermal interference from adjacent recording marks is generated. Therefore, the recording device usually performs test recording, evaluates the obtained reproduced signal, and finely adjusts the shape of the pulse wave of the recorded laser according to the evaluation result, so that at least whenever a new information recording medium is loaded, a correct recording mark can be formed. For example, in the recording marks of the respective lengths, the recording start position offset (0ffset) dTtop for adjusting the start position of the recording mark, the record 5 for adjusting the end position, the 201021037 end position offset dTs, and the test recording time are set. Adjust the offset values. In addition, the recording pulse wave constituting the recorded pulse train may be a single pulse waveform as shown in parts (a), (b), and (c) of FIG. 2, in addition to the multi-pulse waveform described above. Pulse waveform, or fort-shaped pulse waveform. In general, the longer the recording mark is in the single pulse waveform, the more heat is accumulated, and the longer the recording mark is in the L-shaped pulse waveform, the lower the accumulated heat. In the fort-type pulse waveform, the heat of the terminal portion of the recorded number is recorded. In the multi-pulse waveform, the length of the recording mark is not followed, and the accumulated heat is constant. In consideration of the above points, an appropriate waveform of the film characteristics of the information recording layer corresponding to the information recording medium is selected, in particular, an appropriate waveform corresponding to the accumulated heat characteristics. In recent years, images have become highly refined and require more information recording media. In order to increase the recording density of such an information recording medium, it is necessary to make the size of the recording mark of the recorded information smaller. However, if the record mark is reduced, the shortest mark length of the record mark is close to the limit of the optical discrimination limit, and the increase in the inter-code interference and the deterioration of the SNR (Signal Noise Ratio) become more conspicuous. As a result, the position of the leading edge and the terminal side of the recording mark cannot be correctly detected, and it is difficult to correctly decode the recorded information from the reproduced signal. Therefore, when information recording media reproduction information is recorded by a small recording mark, the reproduction signal is usually processed using a PRML (Partial Response Maximum Likelihood) method or the like. The PRML method combines partial response (PR) and maximum probability decoding (ML) techniques to perform waveform estimation on a reproduced signal when a known inter-code interference occurs, and a reproducible signal sequence in which the waveform is selected with the most certain waveform from the estimated waveform. the way. 201021037 In addition, if the record mark becomes smaller, the heat of thermal interference will be transmitted to the _ part, and the end of the temperature will be recorded at the beginning of the record. Cold money. When such a skill occurs, a test record is required for coffee compensation. (4) (4) For the length of the 2 square interval or the rear interval, change ... month dTt〇p). change. The recorded parameters of the recorded pulse wave (for example

Wave 2 = worry = conventional recording pulse wave control method of interference and thermal interference, for example, Patent 1 and Patent Document 2. Dedicated to the ice to reveal the branch, Qian Hongzheng _ when the exact bit column obtained, and the one of the correct bit column shifts the most easy yarn = record 7 , by calculating the regenerative signal and The Euclidean distance estimation of the two-element column, and the regenerative signal adapted to the equalization, detect the offset direction and offset of the f-edge of each pattern ((10)). Then, corresponding to the offset direction and the offset of the edge of the month corresponding to each pattern, the patent document 2 ' is attached to the coffee-length heart-shaped recording parameter after the long record of the record mark = The edge portion of the positive bit column and the error bit column where the station bit shift occurs, and the difference between the amplitude value of the adaptively mixed reproduced signal and the amplitude expectation value calculated by the two-bit array is quantified. Thereby, the offset direction and the offset of the edge are detected. In the same manner as in Patent Document 1, the offset direction and the offset amount of the edge corresponding to each pattern are matched, and the adaptive recording parameter classified by the length of the mark of the record mark to be opened and the interval between the front and the back is optimized. Chemical. 7 201021037 Patent Document 1 and Patent Document 2 process a reproduction signal by the PR1221ML method. The control of the recording pulse disclosed in Patent Document 1 will be further explained using Fig. 3. The information read by the information recording medium 1 is converted into an analog reproduction signal by the optical head 2. The analog reproduction signal is amplified by the preamplifier section 3, and is AC-coupled and input to the AGC section 4. The AGC unit 4 adjusts the amplitude so that the output of the waveform equalization unit 5 in the subsequent stage has a constant amplitude. The amplitude-adjusted analog signal is waveform-shaped by the waveform equalization unit 5, and is input to the A/D conversion unit 6. The A/D conversion unit 6 synchronizes the reproduction clock output from the PLL unit 7 to sample the analog reproduction signal. The PLL unit 7 extracts the reproduction clock from the digital reproduction signal sampled by the A/D conversion unit 6. The digital reproduction signal generated by the sampling by the A/D conversion unit 6 is input to the PR equalization unit 8. The PR equalization unit 8 adjusts the frequency of the digital reproduction signal so that the frequency characteristic of the digital reproduction signal at the time of recording and reproduction is the characteristic assumed by the maximum probability decoding unit 9 (for example, the scale (1, 2, 2, 1) is equalized. characteristic). The maximum probability decoding unit 9 performs maximum probability decoding on the waveform-shaped digital reproduced signal output from the PR equalizing unit 8, and generates a binary signal. The reproduced signal processing technique of the combined PR equalization unit 8 and the most approximate rate decoding unit 9 is a PRML method. The edge shift detecting unit 10 receives the digitally reconstructed signal from the Pr equalizing unit 8 and the binary signal which is output from the maximum probability decoding unit 9. The edge shift detecting unit 1 is migrating from the binary signal discrimination state, and the reliability of the decoding result is sought from the discrimination, the value, and the branch metric. Further, the edge shift detecting unit 1 allocates the reliability according to each of the patterns of the record mark ', the winter start edge, and seeks the offset from the record compensation parameter 201021037 based on the binary signal (hereinafter, Called edge shifting).

The test record is recorded using a data column having a predetermined recording pattern, and the information recording control unit 15 follows the information of the change in the edge of each pattern to determine the information to be changed, and changes the record parameter of the changeable setting. The recording parameter of the changeable setting is, for example, the recording start position offset dTtop ' at the beginning edge portion of the recording mark, and the recording end position offset dTs at the terminal edge portion. For example, the information recording control unit 15 changes the recording parameters in accordance with the recording parameter table shown in Fig. 4. Fig. 4 shows the recording parameters related to the start edge of the classification mark and the length of the front interval, and the recording parameters related to the terminal edge classified by the record mark and the length of the front interval. In Fig. 4, the symbols M(i), the front interval s(i-1), and the rear interval S(i+1) are symbols, which means the time series of the recording marks and intervals as shown in Fig. 5. The symbol Μ indicates the recording symbol ’ symbol s indicates the interval, and the time series of any recording symbol and interval is represented by the symbol i. As shown in Fig. 4, the record marks corresponding to the classified record parameters are represented by M(i). As shown in Fig. 5, the front interval of the recording mark M(i) is s(il) 'The record mark on the front side is M(i-2), the interval on the front side is s(i_3); the space on the back is S ( i+1), the rear record mark is M(i+2), and the rear space is S(i+3).

The start edge is located between the record mark M(i) and the front interval S(i-1). As shown in Fig. 4, the dTtop values are classified in a pattern corresponding to the combination of equal lengths. For example, when the length of the current square is 3T and the length of the recording mark is 4T, it is a pattern of 3Ts4Tm. The terminal edge is located between the record mark M(i) and the rear interval S(i+1). As shown in Fig. 4, the dTs values are classified according to the pattern corresponding to the equal length group 9 201021037. For example, when the length of the recording mark is 3 butyl and the length of the rear space is 2T, it is a pattern 3Tm2Ts. As shown in Fig. 4, there are 32 kinds of recording parameters in total at the beginning edge and the terminal edge. When the information recording control unit 15 adjusts, for example, the leading edge of the recording mark having the front interval of 3T and the recording symbol of 4Τ, the recording parameter (for example, dTtop) of 3Ts4Tm is changed, and the recording mark having the rear interval of 2 and the recording symbol of 3 is adjusted. At the edge of the terminal, the recording parameters of 3Tm2Ts (for example, dTt〇p) are changed. The recording pattern generating portion 11 generates the NRZI signal which is modulated by the input information to be recorded. The recording compensating unit 12 generates a recording pulse train in accordance with the NRZI signal in accordance with the recording parameters changed by the information recording control unit 15. The recording power setting unit 14 sets each recording power such as the peak power pp and the bottom power. The laser drive unit 13 controls the laser light emission operation of the optical head 2 in accordance with the recording power set by the recording pulse train and the recording power setting unit. Thus, by recording and recording the information recording medium i, the pulse shape can be controlled. In order to reduce the amount of edge shifting, it is possible to form a more suitable recording mark and interval by using the recording control method of the interval compensation of the pRML method and the recording parameters. PRIOR ART DOCUMENT Patent Document Patent Document 1: Special Opening 20〇 Japanese Laid-Open Patent Publication No. 2008-112509, the entire disclosure of which is hereby incorporated by reference. Because &, the reproduced signal obtained by the information recording medium must be processed by a higher-order PRML method. In this case, in order to properly reproduce the information recorded in the information recording medium by the high-order PRML method, it is necessary to adjust the record. Condition, to test the § record of the edge position of the record mark with a higher precision adjustment to reduce the error rate when the signal is reproduced. The purpose of the present invention is to provide an information recording medium and a recording/reproducing apparatus which can realize high-density recording by setting a high-order PRML method and adjusting the s recording condition to minimize the error occurrence rate when performing maximum probability decoding. More specifically, it is an object of the present invention to realize a more stable recording and reproducing system which is a recorder capable of reducing the error rate of recording information when performing high-density recording. , the track record and the record condition record area. The aforementioned track record consists of a plurality of record marks and a plurality of intervals respectively set between the plurality of recorded numbers. The aforementioned record strip can be recorded. Recording the recording conditions for recording the foregoing data in the track to be included in the above-mentioned data column, and it shall be formed according to the foregoing recording conditions: in the case where the recording mark of the track is described as the second recording mark, when the foregoing ls When the length of the recorded number 6 is longer than the predetermined length, the length of the first recording mark is used, and the length of the first recording mark is The combination of the lengths of the first intervals before or after the first recording mark is used to classify the recording conditions. When the length of the first β recorded money is in the length of the length, the first record 11 201021037 is described. The length, the length of the first interval, and the combination of the lengths of the second intervals adjacent to the first interval and adjacent to the first recording mark are classified as the recording condition. In a preferred embodiment The predetermined length is the shortest length of the record mark in the foregoing data column. In a preferred embodiment, the combination of the length of the second record mark, the length of the first interval, and the length of the second interval In the classification,

The number of types of the length of the first interval is larger than the number of types of the length of the second space 35. In a preferred embodiment, the recording condition is a parameter for adjusting the position of the start edge of the first mark, and the old partition is adjacent to the space before the first record mark. In a preferred embodiment, the recording condition is a parameter for adjusting the terminal of the recording, and the old partition is adjacent to the space after the first recording mark.

(7) The re-distribution of the information recording medium of the above-mentioned information recording medium includes a PIC area for storing information on the disc information of the aforementioned information. The reproducing apparatus has the regenerative signal processing and the regeneration. The signal processing unit may perform at least the following: scanning the PIC area with the laser light to re-disclose the disc information, and irradiating the laser light to the track to recover the δίΐ 0 recording condition according to the recording condition. Recording the data in the foregoing information. The recording device of the present invention is based on the recorded media recorded on the information recording medium. The resource 12 201021037 is composed of a plurality of record marks and respectively disposed between the plurality of record marks. The recording device includes a regenerative signal processing unit that irradiates a light beam onto the information recording medium, and reproduces the recording condition 'and the recording control unit, and records the information on the information recording medium according to the recording condition. Including the above information, and will be formed in accordance with the aforementioned recording conditions When the track mark of the track is the first record mark, when the length of the first record mark is longer than a predetermined length, the length of the first record mark and the bit position are adjacent to the first record mark or The combination of the lengths of the first intervals at the rear position classifies the recording condition; when the length of the first recording mark is less than or equal to a predetermined length, the length of the first recording mark, the length of the second interval, and the bit are used. The recording condition is classified by a combination of the lengths of the second intervals adjacent to the position of the second recording mark adjacent to the first interval. The evaluation device of the present invention is for evaluating an information recording medium recorded with a recording parameter, wherein the recording parameter is used for recording a data column, wherein the data column is composed of a plurality of record marks and a plurality of numbers respectively set between the plurality of record marks The interval constituting Μ is included in the above-mentioned data column, and the recording mark formed on the track should be the i-th record mark according to the recording condition: when the length of the first record mark is longer than a predetermined length, the foregoing 1 combining the length of the recording mark with the length of the interval between the position adjacent to or behind the aforementioned second recording mark, and classifying the recording parameter; when the length of the first recording mark is less than a predetermined length, the foregoing The length of the first recording mark, the length of the second interval, and the combination of the lengths of the 13th 201021037 2 positions adjacent to the first interval and adjacent to the first recording mark are classified into the recording parameters; The evaluation device includes a regenerative signal processing unit, and the regenerative signal processing unit is derived from the information recording medium The reproduced signal generates a digital signal by using the PRML signal processing method, and the binary signal is decoded by the digital signal, and the first state transition column and the second sure second state are calculated from the binary signal respectively. The difference between the migration column and the reproduced signal is calculated by separately calculating the difference metric to detect the edge shift, and determining whether the information recording medium satisfies the predetermined quality according to the edge shift. The recording and reproducing apparatus of the present invention performs at least one of reproducing or recording an information recording medium that satisfies a predetermined quality by the above-described evaluation device. The information recording medium of the present invention includes a recording and recording condition recording area in which recording conditions can be recorded, and can record a data column composed of a plurality of recording marks and a complex interval between (4) and the plurality of recording marks; The recording condition is classified according to the length of each of the aforementioned recording marks, and when the recording condition is a parameter for adjusting the position of the start edge of the recording mark, the recording condition is classified according to the length of each of the recorded symbols. At least the ' is classified into two types by the length of the space after the adjacent recording mark, and is longer than the predetermined length, and is further classified into two types, and the field (1) describes the condition for use. When the parameter of the position of the terminal edge of the record mark is adjusted, it is classified according to the length of each of the record marks, and the condition of the condition is v, which is predetermined by the length of the space before the preceding record mark. The length is less than or longer than the predetermined length, and is further classified into two types. 14 201021037 The reproducing apparatus of the present invention reproduces the above information recording medium The information recording medium includes a PIC area for storing disc information about the information recording medium; the reproducing apparatus has a regenerative signal processing unit, and the regenerative signal processing unit can perform at least one of: irradiating the laser light to The PIC area reproduces the information of the disc and irradiates the laser light to the track to reproduce information recorded according to the recording condition. The recording apparatus of the present invention records the data according to the recording condition recorded on the information recording medium. The column is recorded in the information recording medium, and the resource column is composed of a plurality of recording marks and a plurality of intervals respectively disposed between the plurality of recording marks; the recording device has a regenerative signal processing unit that irradiates the light beam to The information recording medium reproduces the recording condition and the recording control unit records the information in the information recording medium according to the recording condition; the recording condition is classified according to the length of each of the recording marks. The foregoing recording condition is for adjusting the aforementioned recording mark When the parameter of the position of the end edge is at least one of the recording conditions classified according to the length of each of the recording marks, the length of the space after the adjacent recording mark is a predetermined length or less, or The predetermined length is long and is further classified into two types; when the recording condition is a parameter for adjusting the position of the terminal edge of the recording mark, at least one of the recording conditions classified according to the length of each of the recording marks is The length of the space before the preceding recording mark is less than a predetermined length or longer than the predetermined length, and is further classified into two types. The evaluation device of the present invention is for evaluating the information record in which the recording parameters are recorded. The mediator's record parameter is used to record the data column, and the tribute column 15 201021037 is composed of a plurality of record marks and a plurality of intervals respectively disposed between the plurality of record marks; the foregoing record parameters are according to the foregoing record marks. Classified by length, when the aforementioned recording condition is a parameter for adjusting the position of the leading edge of the aforementioned recording mark At least one of the recording conditions classified according to the length of each of the aforementioned recording marks is further classified into a length shorter than a predetermined length by a length adjacent to the rear of the recording mark or longer than the predetermined length. In the case where the foregoing recording condition is a parameter for adjusting the position of the terminal edge of the aforementioned recording mark, at least the recording condition classified according to the length of each of the foregoing recording marks is by _ preceding 胄 φ § The length before the e-number is less than the predetermined length, or longer than the predetermined length, and is further classified into two types; the evaluation device includes the regenerative signal processing unit' The recording ship and the nickname of the reproduction use the PRML signal processing method to generate a digital signal, and the binary signal is decoded by the digital sTL number, and the first state transition column and the second sureness are calculated from the binary signal respectively. The difference between the second state transition column and the reproduced signal, that is, the difference metric is separately calculated to detect the edge shift, and the information record is determined based on the edge shift just described. Body meets predetermined quality parameters were. The δ recording recording and reproducing apparatus of the present invention is for reproducing or recording at least one information recording medium that satisfies a predetermined quality by the evaluation apparatus. The information recording medium of the present invention includes at least one of a track, a PIC area in which recording conditions are recorded, and a wobbling of the track in which the recording condition is recorded, wherein the track record is composed of a plurality of record marks and points 16 201021037 The data column formed by the complex interval between the plurality of recording marks is used to record the data column in the track; the recording condition includes a terminal position for adjusting the cooling pulse wave of the recorded pulse waveform. a parameter, the recorded pulse waveform is used to form the record mark. The parameter is classified by using a combination of a length of the record mark and a length of a space between a position adjacent to a position before or behind the record mark. By.

In the reproduction device of the present invention, the information recording medium is reproduced, wherein the reproduction device includes a reproduction signal processing unit, and the reproduction signal processing unit can perform at least one of: irradiating laser light to the PIC area to reproduce the information of the disk. And irradiating the laser light to the aforementioned track to reproduce information that has been recorded in accordance with the aforementioned recording conditions. The recording device of the present invention records the data in the information recording medium according to the recording condition that has been recorded in the information record, the first V寅; (4) the plural number and the plural interval respectively set between the plurality of record marks The recording device includes: a regenerative signal processing second processing bundle to the information recording medium, and the reproduction of the recording and recording control unit, wherein the information is recorded in a different information recording contact according to the recording condition; the recording condition The terminal position including the recording pulse wave 敎 cooling pulse wave 5 β is used to call the above (10) mark; the length of the recorded pulse wave sign 'and the position adjacent to the front '=^_ the aforementioned recording position _ The evaluation device of the invention of the invention is used to evaluate the recording of the recorded parameters. The data is recorded by the media. The data is recorded by the plural number of readings and records. Between the complex gates between the plurality of record marks, the si record condition includes a parameter for adjusting the position of the pulse wave (four) terminal position, the record pulse The waveforms are formed by a combination of the length of the aforementioned recording mark and the length of the space between the position adjacent to or before the recording mark in the case where the waveform is formed as follows: The evaluation device includes a regenerative signal processing unit, the regenerative signal processing material, and a digital signal generated by the PRMS signal processing method from the (4) information/media reproduction signal, and the binary signal is decoded by the digital signal, and the binary signal is generated by the digital signal. Calculating the difference between the most confident first state transition column and the second sure second state transition column and the reproduced signal, that is, separately calculating the difference metric to detect the edge shift, and determining the information record according to the edge shift. Whether the media meets the predetermined quality. The recording and reproducing apparatus of the present invention is for reproducing or recording at least one information recording medium that satisfies a predetermined quality by the evaluation device. The recording control device of the present invention records information on the information number media, and the recording control device has a recording compensation parameter determining unit that classifies the recording condition into at least one recording unit corresponding to the recorded data column. Recording the symbol and each of the data patterns of the interval; the classification of the recording conditions of the data patterns is to use the length of the first recording mark included in the data column, and the bit position is adjacent to the first recording mark or The length of the first interval is classified by the combination of the lengths of the first intervals, and is further classified according to the length of the second recording mark adjacent to the position of the first interval, which is adjacent to the first recording mark 18 201021037. Record conditions to record information on the information recording media. In a preferred embodiment, the length of the second recording mark is performed only when the length of the first interval is less than or equal to a predetermined length. In a preferred embodiment, in the classification of the data pattern, the length of the second interval adjacent to the position of the second recording mark is not adjacent to the first recording mark and the first interval, and further classification. In a preferred embodiment, the classification of the length of the second interval is performed only when the length of the second recording mark is equal to or less than the predetermined length. In a preferred embodiment, the predetermined length is the shortest length of the aforementioned data. Further, the recording control device of the present invention records information on the information number media, and the recording control device includes a recording compensation parameter determining unit that classifies the recording condition into at least the recording data column corresponding to the record. a record symbol and a data pattern of one interval; the classification of the recording conditions of the data patterns is performed by using the length of the first record symbol included in the data column and the bit position adjacent to the first record mark The length of the first interval of the position of the square or the rear is classified, and the recording condition is further classified according to the length of the second interval adjacent to the position of the first recording mark that is not adjacent to the first interval. To record information on the information recording media. In a preferred embodiment, according to the classification of the length of the second interval, 19 201021037 is performed only when the length of the first recording mark is less than or equal to a predetermined length. In a preferred embodiment, in the classification of the data pattern, the length of the second recording mark adjacent to the second interval is not adjacent to the first recording mark and the first interval, and further classification. In a preferred embodiment, the length of the second recording mark is performed only when the length of the second interval is less than the predetermined length. In a preferred embodiment, the predetermined length is the shortest length of the aforementioned data. The recording control method of Luben's invention records the information in the data record media's corresponding record data column, and classifies the recording condition into a data pattern containing at least one record mark and one interval; the record of each of the foregoing data patterns The classification of the condition is classified by using a combination of the length of the third record included in the data column and the length of the first interval adjacent to the position before or after the first record mark, and The recording condition is further classified according to the length 'the length of the second recording mark adjacent to the first recording mark adjacent to the first recording mark to record the information on the information recording Φ medium. In a preferred embodiment, the classification of the length of the second recording mark is performed only when the length of the first interval is less than or equal to a predetermined length. In a preferred embodiment, in the classification of the data pattern, the length of the second interval adjacent to the position of the second recording mark is not adjacent to the first recording mark and the first interval, and further classification. In a preferred embodiment, according to the classification of the length of the second interval, 20 201021037 is implemented only when the length of the second recording mark is less than or equal to the predetermined length. In a preferred embodiment, the predetermined length is the shortest length of the aforementioned data. Moreover, the recording control method of the present invention records the information in the information number media, and classifies the recording condition into a data pattern including at least one recording mark and one interval; the foregoing data patterns The classification of the recording condition is classified by using the combination of the length of the first recording symbol included in the data column and the length of the first interval adjacent to the position before or after the first recording symbol, and is classified. The length of the second interval adjacent to the position of the first recording mark is not adjacent to the first interval, and the recording condition 'is further classified to record information on the information recording medium. In a preferred embodiment, the classification of the length of the second interval is performed only when the length of the first recording mark is less than or equal to a predetermined length. In a preferred embodiment, in the classification of the data pattern, the length of the second recording mark adjacent to the second interval is not adjacent to the first recording mark and the first interval, and further Classification record conditions. In a preferred embodiment, the length of the second recording mark is performed only when the length of the second interval is less than the predetermined length. In a preferred embodiment, the predetermined length is the shortest length of the foregoing data. The recording and reproducing device of the present month includes a regenerative signal processing unit and a recording control unit. The regenerative signal processing unit generates a digital signal and decodes using a PRML signal processing method from a signal reproduced by the information recording medium. a recording signal control unit that adjusts a recording parameter for recording information on the information recording medium according to the digital signal and the binary signal, and records the resource sfl in the information recording medium; the recording control unit And including a recording compensation parameter determining unit that classifies the recording condition into a data pattern including at least one recording mark and one interval; and classifying the recording conditions of the respective data patterns, Use the combination of the length of the 丨 record mark included in the above data column and the length of the 丨 interval between the position adjacent to the position immediately before or after the first record mark, and the position is not a length adjacent to the second recording mark adjacent to the first recording mark and adjacent to the position of the first interval, and further · A step of classifications of recording conditions to recording information on the information recording medium. "Further, the recording reproducing apparatus of the present invention, comprising a reproducing system signal processing portion. In the recorded control unit, the regenerative signal processing unit generates a digital signal and decodes the binary signal from the signal reproduced by the information recording medium using the PRML sfl processing method. The recording control unit is based on the digital signal and binarization. a φ signal for adjusting a recording parameter for recording information on the information recording medium, and recording the information on the information recording medium; the recording control unit includes a recording compensation parameter determining unit, and the recording compensation parameter determining unit is corresponding to the recording The data column 'classifies the recording condition into a data pattern including at least one record mark and one space; the classification of the record conditions of the above data patterns uses the length and bit position of the record mark included in the foregoing data column. Classification is performed in combination with the length of the second interval 22 201021037 adjacent to the position before or after the first recording mark, and is adjacent to the position adjacent to the first recording mark not adjacent to the first interval The length of 2_, and further classify the recording conditions to record information on the information recording medium. In a preferred embodiment, the reproduced signal processing unit includes an edge shift detecting unit. The edge shift detecting unit calculates the first state transition column and the second sureness from the binary signal. The difference between the second state transition column and the reproduced signal, that is, the difference metric is calculated, and according to the aforementioned binary signal,

The foregoing difference metric is allocated according to the (4) case of the always-end edge of the record mark, and the edge shifter from the optimum value of the record parameter is obtained corresponding to each figure scale; and the aforementioned regenerative job side is attributed to the track record parameter, and the aforementioned edge shift is performed. Close to the predetermined target value. In the preferred embodiment, the data pattern classification of the recording compensation parameter determining unit is the same as the pattern classification of the edge shift detecting unit. The recording and reproducing method of the present invention comprises a regenerative signal processing step and a recording control step, wherein the regenerative signal processing step generates a digital signal and decodes a binary value by a signal-based PRML signal processing method reproduced by the information recording medium. The step of sewing (4) and (10) the signal 'adjustment' is used to record the information on the recording parameters of the information recording medium, and record the foregoing information in the pre-recording (4); the foregoing recording control step includes the step of determining the parameter The decision-making parameter determining step is a data column corresponding to the record, and the record condition is divided into at least the data pattern of the _ record mark and the one interval; the classification of the record conditions of the foregoing data patterns is used and used in the foregoing data. The length of the first recorded number of the column is classified according to the combination of the length of the first interval of 23 201021037 adjacent to the position of the adjacent recording number, and is not adjacent to the aforementioned i-th record. Marking the length of the second recording mark adjacent to the position of the first interval, and further classifying the recording condition 'to record the information in the capital Recording media. Further, the recording and reproducing method of the present invention includes a regenerative signal processing step and a recording control step, wherein the regenerative signal processing step generates a digital signal and decodes the binary signal by using a PRML signal processing method from the signal reproduced by the information recording medium. The recording control step adjusts the recording parameters for recording information on the information recording medium according to the foregoing digital signal and the binary signal, and records the information on the information recording medium; the recording control step includes recording compensation parameters. a determining step, wherein the recording compensation parameter determining step is to classify the recording condition into a data pattern including at least one of a record mark and an interval; and the classification of the record conditions of each of the data patterns is Classification is performed using a combination of the length of the i-th record symbol included in the data column and the length of the first interval adjacent to the position before or after the second record mark, and is not adjacent to the foregoing 1 long interval of the second interval adjacent to the position of the first recording mark And further classify the recording conditions to record information on the information recording medium. In a preferred embodiment, the regenerative signal processing step has an edge shift detecting step for calculating the most confident first state transition column and the second sureness from the binary signal. The difference between the second state transition column and the reproduced signal, that is, the difference degree I, and according to the above-mentioned binary signal, the difference degree 24 201021037 is allocated according to each pattern of the always-end edge of the recorded number, corresponding to each pattern An edge shifter from the optimum value of the recorded parameter is sought; and the aforementioned reproduced signal processing step adjusts the aforementioned recording parameter such that the aforementioned edge shift approaches a predetermined target value. In a preferred embodiment, the data pattern classification of the recording compensation parameter determining step is the same as the pattern classification of the edge shift detecting step. Advantageous Effects of Invention The present invention classifies a recording condition for recording a data column® on a track using a combination of a length of a recording mark as a recording target and a length adjacent to the square or the rear, and is used as a recording mark of the recording target. When the length is below a predetermined length, the length of the interval adjacent to the rear or the front is also used to classify. Therefore, even if the recording mark is miniaturized and the recording density of the information recording medium * becomes high, the thermal influence at the time of forming the recording mark can be considered, and the recording mark having an appropriate shape can be recorded at an appropriate position with high precision. Therefore, by using the present invention to adjust the recording conditions, it is possible to provide a more child-friendly S-recording reproduction system which can reduce the error rate of recording information for the density recording of the high-order PRML mode. Participant.

[Embodiment: J. Mode for Carrying Out the Invention Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In order to slow down the scanning speed of the laser beam, the recording mark and the interval are shortened by slowing down the line speed in order to reduce the recording density of the recorded media. Thus, for example, in a 12 cm optical disc, the information recording layer can be increased to about 33 GB by about 25 GB per layer. 25 201021037 Moreover, the present invention employs a higher order prml method in order to select the most reliable signal sequence from the waveform of the reproduced signal. Specifically, it is processed in the PR12221ML mode to reproduce information recorded on the information recording medium. When using the high-order PRML method, the evaluation method of the reproduced signal must also be higher. This is because, if the information recording medium is densified, there will be recording marks and intervals that are shorter than the detection limit of the detection system. The recording quality of the information recording medium must take into consideration not only the positional deviation of the recording marks and the intervals, but also The positional offset of the recording mark itself, the positional shift of the space itself, and the positional offset of a group of at least one or more recording marks and spaces must be considered. In these offsets, a pattern containing a plurality of edges can be detected. For example, in the positional offset of the record mark itself, since the beginning of the record mark and the two neighbors of the terminal have an interval, the start end edge and the terminal edge are simultaneously detected. Further, if the combination of the symbol A and the interval B is set as a set of positional offsets, the interval A-symbol A-interval B-symbol B and each of the adjacent portions are more present. The interval and the mark 'so all three edges can be detected. In the conventional PR1221ML method, in order to evaluate the edge position of the reproduced signal, it is considered to evaluate the recording quality in the case where one edge is detected. In the PR12221ML method, as described above, it is necessary to evaluate the recording quality when the pattern including the complex edge offset is detected. . The present invention evaluates the edge position of the reproduced signal by using the MLSE (Maximum Likelihood Sequence Error) disclosed in the pamphlet of the U.S. Patent Application Serial No. 11/964,825 and the International Publication No. 2008/081820 A1. The entire disclosure of U.S. Patent Application Serial No. 11/964, the entire disclosure of which is incorporated herein by reference. First, referring to Figures 6 and 7, the PR12221ML will be briefly explained. Fig. 6 is a diagram showing state transition rules determined by the rll (1, 7) recording code and the equalization mode PR (1, 2, 2, 2, 1) K. Fig. 7 is a diagram showing a grid pattern corresponding to the state transition rule of Fig. 6. With the combination of PR12221ML and RLL (1, 7), the number of states of the decoding unit is limited to 10, the number of state transitions is 16, and the reproduction level is 9 bits. Referring to the state transition rule of PR12221ML as shown in Fig. 6, the state S(0, 0, 0, 0) at a certain moment is recorded as S0, and S(0, 〇, 〇, l) is expressed as S1, S (〇) , 〇, l, l) table is recorded as S2, S (0, 1, 1, 1) is recorded as S3, S (l, l, l, l) is recorded as S4, S (1, 1, 1, 0) S5, S (l, l, 〇, 〇) is expressed as S6, S (1, 0, 0, 0) is expressed as S7, S (1, 0, 0, 1) is expressed as S8, S (〇, l , 1, 0) is recorded as S9, showing 10 states. Here, the "0" or "1" described in parentheses shows a sequence of signals on the time axis, showing the possibility of a state transition from a state under a certain state. Further, the state transition diagram is developed along the time axis to obtain the lattice map shown in Fig. 7. In the state transition of the PR12221ML shown in Fig. 7, when the predetermined state at a certain time is shifted to the predetermined state at the other time, there are an infinite number of state transition patterns (combinations of states) that can be selected for the two state transitions. However, a pattern that is highly likely to cause an error is limited to a specific pattern that is difficult to discriminate. If the pattern of the error is particularly likely to occur, the state transition column pattern of the PR12221ML can be arranged as shown in Figs. 8, 9, and 10. The first line from Fig. 8 to Fig. 1 shows the state transition (Smk.9-Silver) in which two states are prone to error and rejoin. 27 201021037 The second line indicates the migration data column in which the state transition occurred (the X in the migration data column indicates the possibility of an error in the data: the bit ^ when determining the state migration error, The X is the number of errors. In the migration data column, x becomes one of the positive pairs, and the other side corresponds to the second and the second figure, which is the second figure. Bit reversal. Compare with the migration data (the part of the 不在 is not decomposed by the decoding department, (4) is the most error-prone

The first state transition column and the second second state transition column are grasped. The third line indicates the first state transition column and the second state transition column.

The fourth line indicates the two ideal reproduction waveforms (pR equivalent ideal values) that have undergone each state transition. The fifth line indicates the square of the Euclidean distance (the Euclidean distance between the paths) of the two ideal signals. Fig. 8 shows a state transition pattern in which two state transitions can be selected, and the Euclidean distance _ square of the state egg transfer case is 14, with 18_. Such

Earn a fine private _ part (record mark ==, end edge). In other words, the position of the edge of the line is shifted to the second =: the state transition rule shown in Fig. 7 is migrated to "in this case, the record sequence reproduction data can be detected, 〇,,,, ° The interval of the length of one ^, the replacement of "1"' corresponds to the length of the interval above 丄 = hex, 2 Τ. The 11th figure shows the pR equalization ideal wave of the recording sequence shown in Fig. 8 201021037 == The recording sequence shown in Fig. 8 is the same as the waveform of the A path of the u-th image. The same as the map of the sigh equalization ideal waveform shown in the same figure. In the middle of the 11th, 12th, and 13th (sampling at 1st time), the _ system shows ==

In the state transition rule shown in Fig. 7, the sequence of the record of the other path from the state transition path is M, o, g, g, i, i, (), (), ,, as imagined by the interval Partially replace the "0" of the reproduction data, replace the "r' with the symbol part, the interval of the length of 5T_ or more, the length of the 2Τ mark, and the length of the interval of 2Τ. The PR equivalent ideal waveform of the path is shown in the u-th figure. As the 路径 path waveform, the pattern of the Euclidean distance of 14 shown in Fig. 8 must contain one edge information. The ninth figure shows the state transition pattern with the square of the Euclidean distance of 12, and there are 18 types. These patterns are patterns of 2 bit errors or 2T bit errors, and are patterns of 2 bit errors. As an example, the state transition rule shown in Fig. 7 is explained by s 〇 (k_ 7 > to SO ( k) State transition path. In this case, 'the record sequence can be detected as 〇, 〇, 〇, 〇, 1, 1, 0, 0, 0, 0, 〇" 1 path' as imagined by interval Partially replacing the "〇" of the reproduction data, and replacing the "1" with the symbol part, the interval corresponding to the length of the 4T interval, 2T Number, 5T interval or longer. PR of the path, etc. 29 201021037 The price of the ideal waveform shows the scale diameter waveform at the I2®. The migration of the record sequence of the other path is ''oooomoooo'), if you want to replace the recycled data with the interval part. "G" and the symbol part #1, '' correspond to the interval of 5T interval or longer, 2T mark, and 4T interval or longer. The PR equivalent ideal waveform of the path is shown as the 从 way slave waveform in the 12th figure. The pattern of the pattern with an Euclidean distance of 12 shown in Fig. 9 must contain two edge information of the rising edge and the falling edge of the two. The tenth figure shows that the square of the other type of Euclidean distance is 12 There are 18 types of state transition column patterns. These patterns are the contiguous part of the 2 Τ mark and the 郁 郁 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The state transition path from s〇(k_9) to S6(k). In this case, the record sequence can be detected and migrated to the "OAOAUO'Oimoki path. If you want to replace the recycled data with the spacer, the '〇' Replace with a mark" Γ, for the interval of 4 inches or more, 2Τ mark, 2Τ interval, 3Τ mark, 2Τ interval or longer. The PR equivalent ideal waveform of the path is shown as the Α path waveform in Fig. 13. 0 Another path The migration of the record sequence is "0,0,0,0,0,1,1,0,0,1,1,0,0,,, as if you want to replace the part of the reproduced data with a mark by the interval part", The interval corresponding to the length of the predetermined interval, the 2T mark, the 2T interval, the 2T mark, and the 2T interval or longer. The PR equivalent ideal waveform of the path is shown as a 3-path waveform in FIG. The characteristics of the pattern with an Euclidean distance of 12 shown in Fig. 至少 are at least three edge information. 30 201021037 Figure 14 shows the structure of the signal evaluation device for evaluating the quality of the reproduced signal in the case of processing the reproduced signal using the PRl 2221 ML method. The quality of the reproduced signal is evaluated by the edge position of the recorded mark. In the signal evaluation device of Fig. 14, the same components as those of the recording control device of Fig. 3 are denoted by the same reference numerals, and the description thereof will be omitted. Further, the recording code is an RLL (Run Length Limited) code of the RLL (1, 7) code. In Fig. 14, the edge shift detecting unit 1 includes a pattern detecting unit 7 that detects a pattern corresponding to the first figure (14 pattern), the ninth figure (12A pattern), and the tenth figure (12B pattern). 12A pattern detecting unit 704, 12B pattern detecting unit 7〇7; difference metric calculating unit 702, 705, 708 for calculating the difference of each pattern; and accumulating the position shift index of each pattern calculated by the difference metric calculating unit The memory unit 7〇3, 7〇6, and 709. Here, the PR equalization unit 8 has the set frequency characteristic 'the frequency characteristic of the reproduction system can be PR (1, 2, 2, 2, 1), etc. The pattern detecting units 7〇1, 7〇4, and 707 compare the migration data of the eighth, ninth, and tenth graphs with the binarized data, and the binary data and the eighth image and the When the migration data of Fig. 9 and Fig. 10 are identical, the most confident first state transition column and the second sure second state transition column are selected according to Fig. 8, Fig. 9, and Fig. 1 . As a result, the difference metric calculation unit 7〇2, 705, and 708 calculates the ideal value of the state transition column (PR equalization ideal value: refer to Fig. 8, Fig. 9, and Fig. 10) The distance from the digital reproduction signal, that is, the operation metric, further calculates the difference between the metrics calculated by the two state transition columns, and further, since the metric difference has positive and negative values, the absolute value processing is performed. 31 201021037 The pattern detecting units 701, 704, and 707 generate pulse signals based on the binarized data, and output them to the memory units 703, 706, and 709. The pulse signals are used in accordance with FIG. 15, FIG. 16, and FIG. The patterns of the beginning edge and the terminal edge of the recording mark are distributed to the memory. The memory units 703, 706, and 709 are based on the pulse signals output from the pattern detecting units 701, 704, and 707, and the difference metric calculating units 702, 705, and 708 The metric difference of each of the patterns obtained is added in accordance with each pattern shown in Fig. 15, Fig. 16, and Fig. 17. Here, the detailed patterns of Fig. 15, Fig. 16, and Fig. 17 will be described in detail. The symbols Μ and S in Fig. 15, Fig. 16, and Fig. 17 show the time series of the recording marks and intervals shown in Fig. 5. The symbol ! 2 Tm indicates that the recording mark is other than the 2T mark ( For example, 3T mark). Similarly, between The length is 2Ts outside the 2T interval. The symbol xTm is a recording symbol of any length, and the symbol xTs is an arbitrary interval. In the case of the RLL (1, 7) recording code, the length is 2T to 8T. The numbers correspond to the pattern numbers described in Fig. 8, Fig. 9, and Fig. 10. As shown in Fig. 15, the 14 detection patterns classify one edge composed of one interval and one mark. The beginning of the detection pattern displays the edge offset of the interval between the symbol i and the time i-Ι, and the terminal of the 14 detection pattern displays the edge offset of the interval between the symbol i and the time i+1. As shown in Figure 16, the '12A detection pattern is the number and interval of the first time or the next one, and the classification of the 2T s and 2T intervals of the 14th picture of Figure 14 Make a distinction. The beginning of the 12A detection pattern is the length of the interval by the interval i+1'. 201021037

The offset of the time mark between the time interval 1 and the interval between the chests is classified; or by the length of the mark of (4)_2, the offset of the time interval between the marks of the time division μ is classified. The terminal of the 2A detection pattern is classified by the _ length between _Μ, and the offset of the mark in the interval of 1+1 at the time of the M disk, or the length of the mark by the time 1+2. The offset of the 2T interval of the time i + Ι between the marks of the correction 2 at the time of (4) is classified. J

As shown in Fig. 17, the job test pattern distinguishes the 2T mark of the first (4) case and the 2nd line of consecutive patterns by the mark and interval of the next (10) time. Specifically, the classification is based on the continuous 2T offset between the mark and the window. The beginning of the job test pattern is classified by the length of the mark of the time i+2, and the offset of the interval between the time (8) and the time i+Ι between the mark of the time H2 and the time M is classified; or By the length of the mark of the time 丨_3, the offset between the time of the time between the time U3 and the mark of the time i is divided with the offset of the 2T interval of the time i+Ι. The terminal of the 12B detection pattern is classified by the length of the symbol of the time, and the offset between the time k2T mark between the interval of the time m and the mark of the time i-2 and the 2T interval of the time i-Ι is classified; The length of the symbol of i+3 classifies the offset of the 2T interval between the time 丨+1 between the symbol of the time i and the time i+3 and the 2T mark of the time i+2. Thus, by means of the apparatus shown in FIG. 14, the offset of the mark including i edge offsets and the position of _, the offset of 33 201021037 including the symbols of the two edge offsets, and the inclusion of three edge offsets The combination of the mark and the interval tamping as a set of offsets is indexed into each data pattern. When the pattern including the complex edge shift is detected by this, the recording quality can be evaluated by judging the most sure way; L is how the edge is shifted, and the pattern having a high error rate can be determined. The evaluation method of the reproduction signal is not limited to the above method, and the evaluation method of the adjustment condition of the recording condition when the recording date is formed on the information recording medium. It is also possible to adjust the edge offset of the recording mark based on the evaluation result of the degree of the edge offset of the evaluation, using an index value such as reading (4) of the coffee A-ude Margin, or other index values and evaluation methods. According to the present invention, the index of the recording mark relating to the edge offset thus obtained is used as the basis of the 'adjustment of the recording condition' so that the side of the recording mark is shifted to be small. The edge of the record mark is the realm of the mark and the interval. Therefore, according to the conventional technique, as described in the fourth drawing, the recording conditions are classified corresponding to the lengths of the recording marks and the intervals adjacent to the edges. In contrast, the present invention considers the heat of the heat applied to the adjacent recording mark due to the miniaturization of the recording mark, the recording mark of the adjustment edge, the interval of the adjacent, and the recording mark adjacent to the interval. The recording parameters are changed for each length, or by the recording mark of the adjustment edge and the lengths of the interval after the recording mark. Therefore, the embodiment of the recording control method and the recording condition can be adjusted in order, and the implementation form of the recording medium and the information reproducing apparatus of the present invention for realizing high-density recording can be realized. (First embodiment) In the present embodiment, it is possible to adjust the recording control method and the recording condition 34 201021037 and realize the information recording (four) of the high-density recording of stability. In the following description, although the recording pulse condition is used as the recording condition to be adjusted, other recording parameters such as power conditions may be recorded as the recording conditions to be adjusted. Further, although the following describes the control conditions of the position of the start edge and the end edge of the recording mark, the recording pulse width (e.g., Ttop) determined by the start edge and the terminal edge may be used. In the present embodiment, the regenerative signal is processed using the gang shoe method, and the recording code is an RLL (Run Length Limited) code such as a ruler 1^(17) code. <Adjustment method of recording condition at the beginning edge 1β1> The method of adjusting the recording condition Μ is related to the edge of the beginning edge, and is characterized in that, when the recording mark having the start edge of the adjustment is used as the second recording mark, 1 the length of the recording mark, the length of the second interval of the position adjacent to the position before the second recording mark, and the length of the second recording mark positioned adjacent to the first interval not adjacent to the first recording mark And classify the recording conditions. The recording parameter table of Fig. 18 shows a specific classification method of the recording conditions using the adjustment method 1-1 of the present recording condition. In Fig. 18, the recording symbol which is the object of the recording parameter is indicated by the recording symbol M(i) as described above with reference to Fig. 4. Other intervals or record marks use the same symbol. In Fig. 16, the symbol M2 of the (I-2) indicates that the recording symbol is other than the 2T symbol (for example, the 3T symbol). Similarly, the interval length is outside the 2T interval! 2Ts said. The symbol xTm indicates that the length of the recording mark does not need to be particularly limited. The symbol xTs described below is also the same, indicating that the length of the recording interval is not particularly limited. However, in the case of the RLL (1, 7) recording code, the length 35 201021037 is 2T to 8T. The symbolic representation different from Fig. 4 will be described. In the present embodiment, the relationship between the recording marks indicated in the pattern table and the interval between them and the recording marks becomes complicated. Therefore, in the representation of each pattern, τ is given only to the recording symbol Μ(1) which is the object of the recording parameter. For example, when the front interval ΜΗ is a 3T interval and the recording symbol M(1) is a 2T mark, it is expressed as a pattern 382. Further, the same pattern as that of Fig. 4 is shown with parentheses (). Thus, the pattern 3s2Tm is expressed as (3s2Tm). The symbols are also used in the pattern table used to explain the adjustment methods of other recording conditions. As shown in the pattern table of Fig. 18, the current square interval S(i-1) is the shortest interval (2Ts), that is, when it is 3T7b1 or more, it is the same as the fourth pattern of the conventional pattern table. Only when the current square interval is the shortest interval corresponds to the length of the more forward symbol called illusion' pattern is different. That is, the recording parameters are set differently depending on the length of the mark in front of the shortest interval. This is because when the current interval is the shortest interval, it is most susceptible to the heat (four) of the shape of the recording mark in front of the front interval. In addition, the reason why the shortest mark of the high progress record is very small is also the reason. The shortest mark length and the shortest interval length of the recording reproduction system of bd are about 149 nm at 25 gb and about i 12 nm at 33.4 GB. The size of the spot is about 250 nm. In the 33.4 GB recording, even the shortest mark and the shortest interval continuous pattern 2 can be included in the spot. Also, in high-density recording, when you have recorded it. The length of the hexadecimal number becomes shorter, and s£ (the enlargement of the width direction of the recording mark becomes extremely extreme). When the shortest mark is formed, the amount of heat accumulated in the recording film is the least, and the amount of supply to the next record mark (4) is also small. Therefore, the present embodiment 36 201021037 separates the recording parameters according to the difference in the length of the mark in front of the shortest interval, so that the recording mark can be formed more appropriately in the high-density recording. Further, although the present embodiment is to mark the length of the front The difference is classified into the shortest mark 2Tm which is most susceptible to thermal interference and the other record mark! 2Tm, but this is the case of considering the scale of the circuit with the recorded parameters. If the circuit scale can be ignored, the record of 3T or more should be recorded. The markers are individually separated to be configurable.

In particular, in the case where the recording symbol M(i) is equal to or greater than the 3T symbol, if the length of the recording mark of the square is the shortest symbol 2Tm, the recording condition corresponds to the pattern of the migration data column being the 12B pattern shown in FIG. (Strictly speaking, it also includes the 12A pattern of the 2D continuous pattern); if the length of the record mark in front is the shortest mark! 2Tm, the pattern corresponding to the migration data column is the 2T continuous pattern shown in Fig. 9. Unrelated 12A pattern recording conditions. Therefore, in the case where the evaluation of the MLSE described above is performed, the 12A pattern (independent of the 2T continuous pattern) and the 12B pattern (including the 12A pattern relating to the 2T continuous pattern) can be individually evaluated, and the two can be independently adjusted. The recording conditions of the pattern. Fig. 19 shows a recording pulse wave for changing the recording parameter, which is the leading edge of the recording mark whose front interval is the shortest interval. Part (a) of Figure 19 is the NRZI signal of the pattern 2m2s2Tm, part (b) of the 19th figure is the recording pulse wave of the NRZI signal corresponding to the pattern 2m2s2Tm, and part (c) of the 19th figure is the NRZI signal of the pattern 4m2s2Tm. Part (d) of Fig. 19 is the recording pulse wave of the NRZI signal corresponding to the pattern 4m2s2Tm, part (e) of the 19th figure is the NRZI signal of the pattern 2m2s3Tm, and part (f) of the 19th figure is the corresponding pattern 37 201021037 2m2s3Tm The recording pulse wave of the NRZI signal, the (g) part of the 19th figure is the NRZI signal of the pattern 4m2s3Tm, the part (h) of the 19th figure is the recording pulse wave of the NRZI signal corresponding to the pattern 4m2s3Tm, and the part (1) of the 19th figure is the pattern. NRZI signal of 2m2s4Tm, part (j) of Fig. 19 is the recording pulse wave of NRZI signal corresponding to pattern 2m2s4Tm, part (k) of figure 19 is NRZI signal of pattern 4m2s4Tm, part (1) of figure 19 is corresponding pattern 4m2s4Tm The recording pulse wave of the NRZI signal, the (m) part of the 19th figure is the NRZI signal of the pattern 2m2s5Tm, the (n) part of the 19th figure is the recording pulse wave of the NRZI signal corresponding to the pattern 2m2s5Tm, the (脉) of the 19th figure The part is the NRZI signal of the pattern 4m2s5Tm, and the part (p) of the 19th figure is The recording pulse wave of the NRZI signal corresponding to the pattern 4m2s5Tm. The recording symbol to be used as the object of adjusting the recording parameter is a 2T symbol in parts (a) and (c) of Fig. 19, a 3T symbol in parts (e) and (g) of Fig. 19, and (1) in Fig. 19 The (k) part is a 4T mark, and the (m) and (〇) parts of the 19th figure are 5T marks. The two NRZI signals shown in parts (a) and (c) of Fig. 19 are the shortest of the front intervals of the record marks (any of which are 2T marks) for which the recording parameters are adjusted. Interval, but indicates that the length of the log mark further ahead is the 2T mark of the shortest mark or the difference of the other mark. Therefore, even if the 2T mark is recorded in the same manner, as shown in parts (b) and (d) of Fig. 19, the recording parameters of the respective pulse waves are set corresponding to the pattern of the NRZI signal. Although the recording marks in parts (b) and (d) of Fig. 19 are 2T marks, the other recording marks are also the same, and the respective recording parameters are set corresponding to the respective patterns. Here, the beginning edge of the recording mark is recorded by the rising edge of the initial pulse wave 201021037 = the falling edge position dTpeR of the pulse wave, and is adjusted to the appropriate edge position, and the curry has a pattern corresponding to the first exhaustion. The value of the table. That is, although the existing embodiment of the table P is to adjust the starting edge of the recording mark by the recording parameter of the command (10), only the rising edge position dTps1 of the initial pulse wave may be changed. &lt;Light method of recording conditions at the beginning Wei

The adjustment method i and 2 of the t and + are also related to the beginning edge, and the feature 1 is that in the "adjustment method", the current recording time ' corresponds to the length of the interval ahead and the recording mark is classified. That is, j is characterized in that, when the record mark having the start edge of the adjustment is used as the first record mark, the first seal _ 4 ^ ^ ^ is used. The length of the recorded suffix, the length of the interval adjacent to the position of the & square of the first record, and the second position adjacent to the first interval not adjacent to the first record mark The length of the recording mark and the length of the second interval which is adjacent to the position where the first recording mark and the first interval are adjacent to the second recording mark are classified, and the recording condition is classified. The recording parameter table of Fig. 20 shows a specific classification method of the recording conditions using the adjustment method 1-1 of the present recording condition. The thick frame of the first _ is a pattern of expansion of the 18th figure. The pattern of the expansion will be described. As shown in Fig. 20, the recording condition adjustment method 丨_2, when the current recording symbol M(i-2) is the shortest symbol, corresponds to the length of the further front interval s(i_3), and sets different recording parameters. . Specifically, different recording parameters are set depending on the length of the interval s(i_3) of 2T or other '. Therefore, for example, in the case where the 2T continuous pattern 2m2s before the mark Μ(1) is shifted by the bit shifting 2010 201021037, the case where 2Τ is 3 consecutive patterns 2s2m2s and 2T is 2 consecutive patterns! 2s2m; 2s Case 'Set different recording parameters. Therefore, the recording parameters for the 2T continuous pattern can be set more appropriately, and the shift shift of the 2T continuous pattern which is the cause of the error can be reduced. Fig. 21 shows a case where the recording pulse of the recording parameter is changed, and the recording parameter is the leading edge of the recording symbol whose front interval is the shortest interval and the preceding recording symbol is the shortest symbol. The part (3) of Fig. 21 is the NRZI signal of the pattern 2s2m2s2Tm. The part (b) of the 21st figure is the recording pulse wave of the NRZI signal corresponding to the pattern 28211232321111. The part of the 21st picture is the NRZI signal of the pattern 3s2m2s2Trn'. The part (d) is the recording pulse wave of the NRZI signal corresponding to the pattern 3s2m2s2Tm, and the part (e) of the 21st figure is the NRZI signal of the pattern 2s2m2s3Tm. The part (7) of the 21st figure is the NRZI signal corresponding to the pattern 282〇1283丁111. The pulse wave is recorded. The part of Fig. 21 is the NRZI signal of the pattern 3s2m2s3Tm. The part of Fig. 21 is the recording pulse of the NRZI signal corresponding to the pattern 382111283. The part (1) of the 21st part is the NRZI signal of the pattern 2s2m2s4Tm '21st The part (1) of the figure is the recording pulse wave of the NRZI signal corresponding to the pattern 2s2m2s4Tm, the part (k) of the 21st figure is the NRZI signal of the pattern 3s2m2s4Tm, and the part (1) of the 21st figure is the recording pulse wave of the NRZI signal corresponding to the pattern 3s2m2s4Tm. The (m) part of Fig. 21 is the NRZI signal of the pattern 2s2m2s5Tm. The (11) part of the 21st figure is the recording pulse wave of the NRZI signal corresponding to the pattern 2s2m2s5Tm. The (〇) part of the 21st picture is the NRZI signal of the pattern 3s2m2s5Tm. FIG. 21 (p) of the recording pulse corresponding to part of the NRZI signal of pattern 3s2m2s5Tni. The recording symbol to be the object of the adjustment recording parameter is a 2T symbol in (a) 201021037 and (C) of Fig. 21, and a 3Τ symbol in parts (e) and (g) of Fig. 21, in Fig. 21 The (1) and (k) parts are 4Τ marks in the (111) and (〇) parts of the nail map, which are 5Τδ. The two NRZI signals shown in parts (a) and (c) of Fig. 21 indicate that the shortest mark (2T mark) of the longer-order mark is the shortest interval (two intervals) or For this reason, the difference between the interval (here, the ST interval). Therefore, even if the 2 mark is recorded in the same manner, the «· recorded parameters of each recording pulse wave are set as shown in the (b) and (d) parts of Fig. 21 . The recording marks in parts (b) and (d) of Fig. 21 are two-dot symbols, but the other recording marks are also set corresponding to the respective patterns. &lt;Adjustment method of recording condition at the beginning edge 2-b The adjustment method 2-1 of the recording condition is related to the edge of the beginning edge, which is characterized by 'the recording mark having the start edge to be adjusted as the first record § When the number is "the length of the first recording mark, the length of the second interval of the position adjacent to the first recording mark, and the position adjacent to the first recording mark without being adjacent to the first interval The length of the second interval is classified and the recording condition is classified. More specifically, 'when the length of the first record mark is longer than the predetermined length' is classified by using the combination of the length of the first record mark and the length of the first space of the position adjacent to the position before the first record mark. . On the other hand, when the length of the first recording mark is equal to or less than the predetermined length, the length of the first recording mark, the length of the first interval, and the position adjacent to the first recording mark are not adjacent to the first interval. The combination of the lengths of the second intervals is classified. The recording parameter table of Fig. 22 shows the specific classification method of the recording conditions using the adjustment condition of the recording condition 41 201021037 method 2-1. As shown in Fig. 22, when the record mark is the shortest mark, that is, when the mark is 3T or more, the classification of the recording condition is the same as the classification shown in Fig. 4. Only when the record mark M(i) is the shortest interval corresponds to the length of the rearward interval S(i+1), the pattern behaves differently. That is, different recording parameters are set according to the length of the interval behind the shortest mark being 2T or the like. As shown in Fig. 22, when the recording symbol M(i) is the shortest symbol, the recording parameters are classified according to the front interval S(il) of 4 types of 2T, 3T, 4T, and 5T or more, and S(i+1) is classified as 2T or 2 other types. Further, when the recording symbol M(i) is 3T or more, the recording parameter is classified according to the front interval S(il) of 4T, 3T, 4T, and 5T or more, and the rear interval S(i+1) is not. Category 1 of the classification. Therefore, the length of the unrelated recording symbol M(i) is larger than the number of types of the length of the front interval. As described above, the shortest mark of the high density record is smaller than the other record marks. Therefore, even if the front interval is long, when the rear interval is short, the heat at the time of forming the rear recording mark is conducted. That is, after the recording mark is formed, the first formed recording mark is deformed due to the influence of the heat of the recording mark formed later. In this case, the influence of heat is generally related to the edge of the recording mark, but since the recording mark of the high-density recording is very small, not only the edge of the terminal but also the edge of the beginning is also affected. Therefore, in the present embodiment, the recording parameters are classified according to the difference in the length of the interval behind the shortest mark, so that the recording mark can be formed more appropriately in the high-density recording. That is, although the recording conditions are classified according to the length of each of the first recording marks, the parameters relating to the recording conditions are used to adjust the position of the end edge of the first recording mark at the beginning of 201021037, and the length of each of the third recording marks is When at least one of the classified recording conditions is below a predetermined length, that is, when the length of the second recording mark is less than a predetermined length, the length of the second interval adjacent to the second recording mark is less than a predetermined length or It is longer than the predetermined length and more classified into two types. Further, this condition classifies the difference in the length of the rear interval as the shortest interval 2Ts of the heat-transmission shirt and the interval 丨2Ts. However, this is a case where the scale of the circuit having the recording parameters is considered. If the circuit size can be ignored, the interval of 3T intervals or more should be individually classified to be configurable. In particular, when the front interval S(i_l) is equal to or greater than the 3T interval, if the interval length at the rear is the shortest interval 2Ts, the recording condition corresponds to the pattern of the migration data column being the 12B pattern shown in FIG. 10 ( Strictly speaking, it also includes the 12A pattern of 2T continuous pattern; if the interval length of the rear is the shortest interval! 2Ts, the pattern corresponding to the migration data column is 12A which is not related to the 2T continuous pattern as shown in Fig. 9. The recording conditions of the pattern. Therefore, in the case where the above-mentioned MLSE is evaluated as an index, the 12A pattern (independent of the 2T continuous pattern) and the 12B pattern (including the 12A pattern relating to the 2T continuous pattern) can be individually evaluated and the two can be independently adjusted. The recording conditions of the pattern. Fig. 23 shows the recording pulse wave of the change recording parameter relating to the beginning edge of the shortest mark sandwiched between the front interval and the rear interval. Part (a) of Fig. 23 is the NRZI signal of the pattern 2s2Tm2s, part (b) of the 23rd figure is the recording pulse wave of the NRZI signal corresponding to the pattern 2s2Tm2s, and part (c) of the 23rd figure is the NRZI signal of the pattern 2s2Tm4s, The part (4) of Fig. 23 is the recording pulse wave of the NRZI signal corresponding to the pattern 2s2Tm4s, the (e) part 43 201021037 of the 23rd figure is divided into the NRZI signal of the pattern 3s2Tm2s, and the part (f) of the 23rd figure is the NRZI of the corresponding pattern 3s2Tm2s. The recording pulse of the signal, the (g) part of Fig. 23 is the NRZI signal of the pattern 3s2Tm4s, the part (h) of the 23rd figure is the recording pulse wave of the NRZI signal corresponding to the pattern 3s2Tm4s, and the part (i) of the 23rd figure is The NRZI signal of the pattern 4s2Tm2s, the (1) part of the 23rd figure is the recording pulse wave of the NRZI signal corresponding to the pattern 4s2Tm2s, the (k) part of the 23rd figure is the NRZI signal of the pattern 4s2Tm4s, and the part (1) of the 23rd figure is the corresponding pattern. The recording pulse wave of the NRZI signal of 4s2Tm4s, the (m) part of Fig. 23 is the NRZI signal of the pattern 5s2Tm2s, the (n) part of the 23rd figure is the recording pulse wave of the NRZI signal corresponding to the pattern 5s2Tm2s, and the 23rd figure (〇 Part of the NRZI signal of the pattern 5s2Tm4s, part (p) of the 23rd figure A recording pulse corresponding NRZI signal of pattern of 5s2Tm2s. The interval before the recording mark as the object of adjusting the recording parameter is 2T interval in parts (a) and (c) of Fig. 23, and 3T interval in part (e) and (g) of Fig. 23, at 23rd. Parts (1) and (k) of the figure are 4T intervals, and parts (m) and (〇) of Fig. 23 are 5T intervals. In the two NRZI signals shown in parts (a) and (c) of Fig. 23, the shortest interval (2T mark) is indicated as the shortest interval before the recording mark as the object of adjusting the recording parameters. The length of the rear space is the 2T interval of the shortest interval or the difference of the other intervals. Therefore, even if the 2T mark is recorded in the same manner, as shown in parts (b) and (d) of Fig. 23, the recording parameters of the respective recording pulse waves are set corresponding to the pattern of the NRZI signal. The leading edge of the 'recording mark' is adjusted to the appropriate edge position by the rising edge position dTps2 of the initial pulse wave and the recording parameter 201021037 of the falling edge position dTpe2 of the initial pulse wave. Thus, dTps2 and dTpe2 respectively have values classified according to the pattern table of Fig. 22. That is, there is a table of dTps2 and a table of dTpe2. In the present embodiment, although the start edge of the recording mark is adjusted by the recording parameters of dTps2 and dTpe2, only the rising edge position dTps2 of the initial pulse wave may be changed. &lt;Adjustment Method 2-2 of Recording Conditions at the Beginning Edge&gt; The adjustment method 2-2 of the present recording condition is also related to the start edge edge, and is characterized in that, in the adjustment method 2-1, when the rear interval is the shortest interval When , ® sorts the record mark for the length of the record mark that follows. That is, when the recording symbol having the leading edge to be adjusted is used as the first recording symbol, the length of the first recording symbol and the first interval of the position where r is adjacent to the position before the first recording symbol. The length and the position of the second interval adjacent to the first recording mark not adjacent to the first interval, and the position adjacent to the second interval not adjacent to the first recording mark and the second interval The length of the second record mark is classified, and the recording condition is classified. The recording parameter table of Fig. 24 shows the specific classification method of the s recording conditions using the adjustment method 2-2 of the present recording condition. The thick frame of Fig. 24 is a pattern in which the 22nd image is expanded. The pattern of the expansion will be described. As shown in Fig. 24, the recording condition adjustment method 2_2 sets different recording parameters when the rear interval s(i+1) is the shortest interval, corresponding to the length of the rearmost recording symbol M(i+2). . Specifically, different recording parameters are set depending on whether the length of the recording mark Μ(ι+2) at the rear is 2T or the like. Therefore, for example, in the case where the recording symbol Μ(1) and the 27 consecutive patterns 2m2s formed by the rear space are displaced by the bit shift, the case where 2 is 3 continuous patterns 45 201021037 2m2s2m and 2T is 2 consecutive patterns of 2m2s In the case of !2m, set different recording parameters. Therefore, the shift parameter of the 2T continuous pattern can be more appropriately set to reduce the shift shift of the 2T continuous pattern which is the cause of the error. Fig. 25 shows the recording pulse wave of the change recording parameter which is the edge of the shortest mark which is sandwiched between the front interval and the shortest interval. The part (4) of Fig. 25 is the NRZI signal of the pattern 2s2Tm2s2m, the part (b) of the 25th figure is the recording pulse wave of the NRZI signal corresponding to the pattern 2s2Tm2s2m, and the part (c) of the 25th figure is the NRZI signal of the pattern 2s2Tm2s3m, the 25th. The part (d) of the figure is the recording pulse wave of the NRZI signal corresponding to the pattern 2s2Tm2s3m, the part (e) of the 25th figure is the NRZI signal of the pattern 3s2Tm2s2m, and the part (f) of the 25th figure is the record of the NRZI signal corresponding to the pattern 3s2Tm2s2m. Pulse wave, part (g) of Fig. 25 is the NRZI signal of pattern 3s2Tm2s3m, part (h) of figure 25 is the recording pulse wave of NRZI signal corresponding to pattern 3s2Tm2s3m, and part (i) of figure 25 is pattern 4s2Tm2s2m The part of (1) of the NRZI signal 'Fig. 25 is the recording pulse wave of the NRZI signal corresponding to the pattern 4s2Tm2s2m'. The (k) part of the 25th figure is the NRZI signal of the pattern 4s2Tm2s3m, and the part (1) of the 25th figure is the NRZI of the corresponding pattern 4s2Tm2s3m. The recording pulse of the signal, the (m) part of Fig. 25 is the NRZI signal of the pattern 5s2Tm2s2m, and the part (8) of the 25th figure is the recording pulse wave of the NRZI signal corresponding to the pattern 582 Ding 111232111. NRZI signal of pattern 5s2Tm2s3m 'Fig. 25 (p) of the corresponding part of the recording pulse signal pattern 5s2Tm2s3m of nrzi. The interval before the recording mark as the object of adjusting the recording parameter is 2T interval in parts (a) and (c) of Fig. 25, and 201021037 3T interval in part (e) and (g) of Fig. 25 The (1) and (k) portions of Fig. 25 are 4T intervals, and the (m) and (〇) portions of Fig. 25 are 5T intervals. The two NRZI signals shown in parts (a) and (c) of Fig. 25 indicate that the length of the trailing mark or the shortest mark is the shortest mark (2T mark) and the other record mark (here, 3τ) The difference in the mark). Therefore, even if the 2T mark is recorded in the same manner, the respective recording parameters are set corresponding to the respective patterns of the 25th (b)th and 25th (d)th drawings. Although the interval between the 25th (b) and 25th (d) is 2T intervals, the other front intervals are also set for each pattern corresponding to each pattern. <Adjustment method of recording condition at the edge of the terminal The method 1-1 for adjusting the recording condition is related to the edge of the terminal, and the feature is that the recording mark having the terminal edge to be adjusted is used as the first record. The length of the first recording mark, the length of the first interval adjacent to the position after the first recording mark, and the second recording position adjacent to the position of the first interval not adjacent to the second recording mark The length of the token, and the classification of the recording conditions. ® The recording parameter table in Fig. 26 shows the specific classification method for the recording conditions using the adjustment method 1-1 of this recording condition. As shown in the pattern table of Fig. 26, when the rear interval S(i+1) is the shortest interval (2T), that is, the interval of 3 inches or more, it is the same as the fourth pattern of the conventional pattern table. Only when the rear interval is the shortest interval corresponds to the length of the rear mark M(i+2), and the pattern behaves differently. That is, different recording parameters are set depending on the length of the mark behind the shortest interval. This is because, as in the case where the front interval is the shortest interval, the rear 47 201021037 interval is also the influence of thermal interference at the shortest interval. In particular, in the case where the (1) is equal to or greater than the 3T mark, if the recording mark length at the rear is the most 2Tm', the recording condition corresponds to the pattern of the migration data column being the 12B pattern shown in the first figure ( Strictly speaking, it also includes the 12A pattern of the 2T continuous pattern; if the length of the record mark at the rear is the shortest mark! 2Tm 'the pattern corresponding to the migration data column is the one shown in Fig. 9 regardless of the 2T continuous pattern. Recording conditions for the 12A pattern. Therefore, in the case where the above-mentioned MLSE is evaluated as an index, the i2a pattern (independent of the 2T continuous pattern) and the 12B pattern (including the 12T continuous pattern) can be individually evaluated, and these can be independently adjusted. Recording conditions for 2 patterns. Fig. 27 shows the recording pulse wave of the change recording parameter, which is the terminal edge of the recording mark whose rear interval is the shortest interval. Part (a) of the figure is the NRZI signal of the pattern 2Tm2s2m, part (b) of the 27th figure is the recording pulse wave of the NRZI signal corresponding to the pattern 2Tm2s2m, and part (c) of the 27th figure is the NRZI signal of the pattern 2Tm2s4m. Part (d) of Fig. 27 is the recording pulse wave of the NRZI signal corresponding to the pattern 2Tm2s4m, part (e) of the 27th figure is the NRZI signal of the pattern 3Tm2s2m, and part (f) of the 27th figure is the corresponding pattern 〇3Tm2s2m. The recording pulse wave of the NRZI signal, the (g) part of the 27th figure is the NRZI signal of the pattern 3Tm2s4m, the part (h) of the 27th figure is the recording pulse wave of the NRZI signal corresponding to the pattern 3Tm2s4m, and the part (i) of the 27th figure The NRZI signal of the pattern 4Tm2s2m, the part (1) of the 27th figure is the recording pulse wave of the NRZI signal corresponding to the pattern 4Tm2s2m, the (k) part of the 27th figure is the NRZI signal of the pattern 4Tm2s4m, and the part (1) of the 27th figure corresponds to The recording pulse wave of the NRZI signal of the pattern 4Tm2s4m, the (m) part of the 27th figure is the NRZI signal of the pattern 48 201021037 5Tm2s2m, and the (n) part of the 27th figure is the recording pulse wave of the NRZI signal corresponding to the pattern 5Tm2s2m, the 27th figure The (〇) part is the NRZI signal of the pattern 5Tm2s4m, the picture of Figure 27 Part (p) is the recording pulse of the NRZI signal corresponding to the pattern 5Tm2s4m. The recording symbol to be used as the object of adjusting the recording parameter is a 2T symbol in parts (a) and (c) of Fig. 27, a 3T symbol in parts (e) and (g) of Fig. 27, and (1) in Fig. 27 The (k) part is a 4T mark, and the (m) and (〇) parts of the 27th figure are 5T marks. The two NRZI signals shown in parts (a) and (c) of Fig. 27 indicate that the length of the recording mark which is shorter than the shortest interval (2T interval) of the rear interval is the shortest mark (2T mark) and The difference between the record mark (here, the 4T mark). Therefore, even if the 2T mark is recorded in the same manner, the respective recording parameters are set corresponding to the respective patterns of the 27th (b)th and 27th (d)th drawings. Although the record marks in the 27(b) and 27(d) are 2T marks, the other record marks are the same, and the respective record parameters are set corresponding to the respective patterns. Here, the terminal edge of the record mark is adjusted to the appropriate edge position by recording the recording parameter of the end position offset dCpl. In this case, the pattern table of Fig. 24 has the aforementioned table of dCpl. In the present embodiment, the terminal edge of the recording mark is adjusted by the recording parameter of dCpl described above, but the falling edge position dLpe of the end pulse wave (only shown in Fig. 27(b)) can be changed. However, the 2T symbol of the single pulse is a pulse wave setting condition that competes with the dTpel and the aforementioned dTpe2. Therefore, the falling edge position dLpe of the pulse wave recorded by the single pulse wave can be used when the aforementioned dTpel and the aforementioned dTpe2 are not applicable. &lt;Adjustment method of recording condition at the edge of the terminal 1_2&gt; 49 201021037 The adjustment method 1-2 of the condition of the recording is also related to the edge of the terminal, and is characterized in that in the "adjustment method", when the recording mark at the rear is When the shortest mark is used, the record mark is classified corresponding to the length of the rear space. That is, when the recording symbol having the terminal edge to be adjusted is used as the first recording number, the length of the first recording symbol is adjacent to the first! Record. The length and position of the third interval of the position after the number is not adjacent to the first record. The length ' and the length of the second recording mark adjacent to the position of the second interval are equal to the length of the second interval adjacent to the position where the first recording mark and the first interval are adjacent to the second recording mark, and are classified. Record conditions. The recording parameter table of Fig. 28 shows the specific classification method of the recording conditions using the adjustment method 1-2 of this recording condition. The thick frame of Fig. 28 is a pattern of expansion of the table of Fig. 26. The pattern of the expansion will be described. * As shown in Fig. 28, the adjustment method of the recording condition ^ is when the recording mark M (i+2) at the rear is the shortest mark, and corresponds to the rear interval s (i+3) * and ° is different The parameters have been recorded. Specifically, different recording parameters are set depending on whether the length of the rear interval S(i 3) is 2τ or otherwise. For example, in the 2T continuous pattern 2s2m behind the 圮 mark M(i), the total error occurs in the displacement of the participating bits, that is, the case of suppressing 3 consecutive patterns 2s2m2s and the case of 2T being 2 consecutive _ In the case, set different recording parameters. Therefore, it is possible to more appropriately set the recording parameters for the 2T continuous pattern, and it is possible to reduce the shift shift of the two consecutive patterns which are the cause of the error. Fig. 29 shows that the recording pulse of the recording parameter is changed. The recording parameter is the terminal edge of the recording symbol having the shortest interval and the rear recording mark being the shortest symbol. The part (4) of Fig. 29 is the NRZI signal of the pattern 2Tm2s2m2s 50 201021037, the part (b) of the 29th figure is the recording pulse wave of the NRZI signal corresponding to the pattern 2Tm2s2m2s, and the part (c) of the 29th figure is the NRZI signal of the pattern 2Tm2s2m3s, Part (d) of Fig. 29 is the recording pulse wave of the NRZI signal corresponding to the pattern 2Tm2s2m3s, part (e) of the figure 29 is the NRZI signal of the pattern 3Tm2s2m2s, and part (f) of the 29th figure is the NRZI signal corresponding to the pattern 3Tm2s2m2s. The recording pulse wave, the (g) part of Fig. 29 is the NRZI signal of the pattern 3Tm2s2m3s, the part (h) of the 29th figure is the recorded pulse wave of the NRZI signal corresponding to the pattern 3Tm2s2m3s, and the part (1) of the 29th figure is the pattern. The NRZI signal of 4Tm2s2m2s, the (j) part of Fig. 29 is the NRZI signal of the NRZI signal corresponding to the pattern 4Tm2s2m2s, the (k) part of Fig. 29 is the NRZI signal of the pattern 4Tm2s2m3s, and the part (j) of Fig. 29 The recording pulse wave of the corresponding pattern 4Tm2s2m3si NRZI signal 'the (1) part of the 29th figure is the recording pulse wave of the NRZI signal of the pattern 5Tm2s2m2s, and the (m) part of the 29th figure is the NRZI signal '29th figure of the corresponding pattern 5Tm2s2m2s (〇) Part of the pattern NRZ of 5Tm2s2m3s The I signal, part (p) of Fig. 29 is the recording pulse wave of the NRZI signal corresponding to the pattern 5Tm2s2m3s. The recording symbol for the object of adjusting the recording parameter is a 2T symbol in parts (a) and (c) of Fig. 29, and a 3T symbol in parts (e) and (g) of Fig. 29, and Parts i) and (8) are 4T marks, and parts (m) and (〇) in Fig. 29 are 5T marks. The two NRZI signals shown in parts (a) and (c) of Fig. 29 indicate that the length of the interval shorter than the shortest mark (2T mark) of the rear recording mark is the shortest interval (2T interval) and The difference between the intervals (here, the 3T interval). Therefore, even if the 2 mark is recorded in the same manner, the respective recording parameters are set corresponding to the respective patterns in the 29th (b)th and 29th (d)th portions. The recording marks in the 29th (b) 51, 201021037, and 29(4) sections are 2T marks, but the other recording marks are the same, and the respective recording parameters are set corresponding to the respective patterns. &lt;Adjustment Method 2-1 Regarding Recording Conditions at the End of the Terminal&gt; The method 2-1 for adjusting the recording condition is related to the terminal edge, and is characterized in that the recording mark having the terminal edge to be adjusted is recorded as the third record. In the case of the symbol, the length of the first recording mark, the length of the first interval adjacent to the position after the second recording nickname, and the position adjacent to the first recording mark are not adjacent to the first interval. The length of the second interval, and the recording conditions are classified. More specifically, when the length of the first record mark is longer than the predetermined length, the combination of the length of the first record mark and the length of the first space adjacent to the position after the first record mark is used. And classification. On the other hand, when the length of the first recording mark is equal to or less than the predetermined length, the length of the first recording mark, the length of the first interval, and the position adjacent to the first recording mark are not adjacent to the first interval. The combination of the lengths of the second intervals is classified. The recording parameter table of Fig. 30 shows a specific classification method of the recording conditions using the adjustment method 2-1 of the present recording condition. If the pattern table in Fig. 3 indicates that the $D record is the shortest mark, that is, the 3 T mark or more, the classification of the recording conditions is the same as the classification shown in Fig. 4. Only when the record mark M(1) is the shortest mark corresponds to the length of the front interval S(i-l), and the pattern behaves differently. That is, the length of the interval in front of the shortest mark is 2T or the other, and the parameter of 5 is not recorded. As shown in Fig. 30, the recording parameters are classified according to the rear spacing S〇+l) of 4T, 3T, 4T, and 5 or more. Further, the interval J (S) is 2τ or other. Classified by 2 types. When the record mark 52 201021037 M(i) is 3T or more, the recording parameter is classified according to the rear interval S(i+1) of 4 types of 2Τ, 3Τ, 4Τ, and 5Τ or more, and the front interval S(il) is not. Category 1 category. Therefore, the length of the unrelated recording symbol M(i) is larger than the number of types of the length of the front interval. As indicated above, the shortest mark of the high density record is smaller than the other record marks. Therefore, even if the rear interval is long and the current interval is short, the heat at the time of forming the front recording mark is conducted. That is, it is affected by the heat of the record mark formed first. In this case, the effect of heat is generally related to the front edge of the record mark, but since the record mark of the high-density record is very small, not only the start edge but also the edge of the terminal. Therefore, in the present embodiment, the recording parameters are classified according to the difference in the length of the interval from the farther mark, so that the recording marks can be formed more appropriately in the high-density recording. That is, although the recording condition is classified according to the length of each first recording mark, the parameter relating to the recording condition is used to adjust the position of the terminal edge of the first recording mark, and the length of each first recording mark is classified. When at least one of the recording conditions is less than a predetermined length, that is, when the length of the first recording mark is less than a predetermined length, the length of the second interval adjacent to the first recording mark is less than a predetermined length or more predetermined The length is long and is more classified into two. Further, in the present embodiment, the difference in the length of the front interval is classified into the shortest interval 2Ts of the influence of the heat conduction and the interval therebetween! 2Ts. However, this is a case in which the scale of the circuit having the recording parameters is considered. If the circuit size can be ignored, the interval of 3T intervals or more should be individually classified to be configurable. 53 201021037 In particular, when the interval S (i+1) at the rear is 3T or more, if the interval length in the front is the shortest interval of 2Ts, the recording condition corresponds to the pattern of the migration data column as shown in Fig. 10. The 12B pattern (strictly speaking, also includes the 12A pattern of the 2T continuous pattern); if the interval length in front is the shortest interval! 2Ts 'the pattern corresponding to the migration data column is continuous with 2T as shown in Fig. 9. Recording conditions for pattern-independent 12A patterns. Therefore, in the case where the evaluation of the MLSE described above is performed, the 12A pattern (independent of the 2T continuous pattern) and the 12B pattern (including the 12A pattern relating to the 2T continuous pattern) can be individually evaluated, and the two can be independently adjusted. The recording conditions of the pattern. Referring to Fig. 31, the recording pulse wave of the change recording parameter is displayed, which is the edge of the terminal which is sandwiched between the front interval and the shortest mark of the rear interval. Part (a) of Fig. 31 is the NRZI signal of pattern 2s2Tm2s, (b) of Fig. 31, part is the recording pulse wave of NRZI signal corresponding to pattern 2s2Tm2s, and part (c) of part 31 is NRZI of pattern 4s2Tm2s. The signal, part (4) of Fig. 31 is the recording pulse wave of the NRZI signal corresponding to the pattern 4s2Tm2s, the part (4) of the 31st figure is the NRZI signal of the pattern 2s2Tm3s, and the part (f) of the 31st figure is the record of the NRZI signal of the corresponding pattern 2s2Tm3s. Pulse wave, part (8) of Fig. 31 is the NRZI signal of 4s2Tm3s in Fig. 4, part (h) of Fig. 31 is the recording pulse wave of NRZI signal corresponding to pattern 4s2Tm3s, and part (丨) of Fig. 31 is pattern 2s2Tm4s The NRZI signal '31' is the recording pulse of the NRZI signal corresponding to the pattern 2s2Tm4s, the (k) part of the 31st is the NRZI signal of the pattern 4s2Tm4s, and the (1) part of the 31st is the NRZI corresponding to the pattern 4s2Tm4s. The recording pulse wave of the signal, the (m) part of Fig. 31 is the recording pulse wave of the NRZI signal of the pattern 2S2Tm5s, and the (n) part of the 31st figure is the corresponding pattern 2s2Tm5s 54 201021037 NRZI signal '31st picture (〇) Part of the nrzi signal of the pattern 4s2Tm5s, Figure 31 (of Part P) is the recording pulse of the NRZI signal corresponding to the pattern 4s2Tm5s. The interval after the recording mark to which the recording parameter is adjusted is the 2T interval in parts (a) and (c) of Fig. 31, and the 3T interval in the parts (6) and (g) of Fig. 31. Parts (1) and (k) of the figure are 4T intervals, and parts (m) and (o) of Fig. 31 are 5T intervals. The two NRZI signals shown in parts (a) and (4) of Fig. 31 indicate the difference between the shortest interval (2T interval) and the other interval (here, 4T interval). Therefore, even if the 2T mark is recorded in the same manner, the respective recording parameters are set corresponding to the respective patterns of the 31st (b)th and 31st (d) figure. Although the interval after the 31st (b)th and 31st (d)th part is 2nd interval, the other back intervals are the same, and each recording parameter is set corresponding to each pattern. The terminal edge of the 'recording mark' is adjusted to the appropriate edge position by recording the parameter of the end position offset dCp2. In this case, the pattern table of Fig. 28 has the aforementioned table of dCp2. In the present embodiment, the terminal edge of the recording symbol is adjusted by the recording parameter of dCp2, but the falling edge position dLpe of the end pulse wave (only described in Fig. 31(b)) can be changed. However, the 2T symbol of the single pulse is a pulse wave setting condition that competes with the dTpel and the aforementioned dTpe2. Therefore, the falling edge position dLpe of the pulse wave recorded by the single pulse wave can be used when the aforementioned dTpel and the aforementioned dTpe2 are not applicable. &lt;Adjustment method of recording condition of terminal edge 2-2&gt; The adjustment method 2-2 of this recording condition is also related to the edge of the beginning edge, and its special 55 201021037 is characterized by 'in the adjustment method 2_丨, the interval in front of t For the shortest interval, the long "separated record mark" corresponding to the record mark in front of the mark. That is, when the record number having the terminal edge to be adjusted is used as the first track mark, the mark record is recorded by the third mark. The length of the W interval of the position adjacent to the position after the first recording mark, the length of the second interval which is adjacent to the position where the recording mark is not adjacent to the first interval, and the bit are not adjacent to The recording condition is classified by the length of the second recording mark at the position where the i-th recording mark and the second interval are adjacent to the second interval. The recording parameter table of Fig. 32 shows the adjustment method φ method using the recording condition 2-2 The specific classification method of the s recording conditions. The thick frame in Fig. 32 is a pattern in which the table of Fig. 3 is expanded. The pattern of the expansion is explained. As shown in Fig. 32, the adjustment method of the recording conditions is shown. 2_2, When the interval s(ii) is the shortest interval, the _ length corresponding to the preceding record mark M(i_2) is set, and different recording parameters are set. Specifically, according to the record in front, ι· 2) The length is 2T or the other, and different recording parameters are set, whereby, for example, in the error of the bit shift of the 21^ continuous pattern 2s2m formed by the recording mark]^1(1) and the front interval, For the case where 2 is 3 consecutive reference patterns 2m2s2m and 2T is 2 consecutive patterns of 2m2s2m, different recording parameters are set. Therefore, the recording parameters for the 2T continuous pattern can be set more appropriately, which can be reduced to the cause of the error. The shifting offset of the 2T continuous pattern. Fig. 31 shows the recording pulse wave of the change recording parameter, which is the terminal edge of the shortest mark sandwiched between the rear interval and the shortest interval. (4) of Fig. 31 The part is the NRZI signal of the pattern 2m2s2Tm2s, the part (b) of the 31st figure is the NRZI signal corresponding to the pattern 2m2s2Tm2s, 56 201021037, and the part (c) of the 31st part is the NRZI signal of the pattern 3m2s2Tm2s, '31' (4) unit It is divided into the recording pulse wave of the NRZI signal corresponding to the pattern 3m2s2Tm2s, the part (e) of the 31st figure is the NRZI signal of the pattern 2m2s2Tm3s, and the part (f) of the 31st figure is the recording pulse wave of the NRZI signal corresponding to the pattern 2m2s2Tm3s, the 31st The part (g) of the figure is the NRZI signal of the pattern 3m2s2Tm3s, the part (h) of the 31st figure is the recording pulse wave of the NRZI signal corresponding to the pattern 3m2s2Tm3s, and the part (i) of the 31st figure is the NRZI signal of the pattern 2m2s2Tm4s, the 31st The part (j) of the figure is the Φ recording pulse wave of the NRZI signal corresponding to the pattern 2m2s2Tm4s, the (k) part of the 31st figure is the NRZI signal of the pattern 3m2s2Tm4s, and the part (1) of the 31st figure is the NRZI signal of the corresponding pattern 3m2s2Tm4s. The pulse wave is recorded. The (m) part of Fig. 31 is the NRZI signal of the pattern 2m2s2Tm5s, the (n) part of the 31st is the recording pulse of the NRZI signal corresponding to the pattern 2m2s2Tm5s, and the (〇) part of the 31st figure is The NRZI signal of the pattern 3m2s2Tm5s, and the (P) part of the 31st figure are the recording pulse waves of the NRZI signal corresponding to the pattern 3m2s2Tm5s. The interval after the recording mark to which the recording parameter is adjusted is 2T intervals in parts (4) and (c) of Fig. 31, and 3T intervals in parts (e) and (g) of Fig. 31, and Fig. 31 The (丨) and (k) portions are 4T intervals, and the (m) and (o) portions in Fig. 31 are 5T intervals. The two NRZI signals shown in parts (a) and (c) of Fig. 31 indicate that the length of the preceding record or the shortest mark is the shortest mark (2T mark) and the other record mark (here, 3) The difference between Ding. Therefore, even if the 2T mark is recorded in the same manner, each record parameter is set corresponding to each of the patterns in the 31 (b) and 31 (d) portions. In the 31st (b) and 57th 201021037 section 31 (d), the interval is 2Τ, but the other rear intervals are the same, and each recording parameter is set for each pattern. Thus, the present embodiment can use a combination of the length of the recording mark as the recording target and the length of the interval adjacent to the front or the rear, and classify the recording condition for recording the data column on the track. Therefore, even if the recording mark is miniaturized and the recording density of the recording medium becomes high, the influence of heat when forming the adjacent recording mark can be considered, and the shape having the appropriate shape can be more accurately recorded. Recorded in an appropriate location. Further, since the classification of the recording conditions is subdivided only when the length of the recording mark as the recording target is less than or equal to the predetermined length of φ, the classification is not lengthy, and the recording parameters can be adjusted in accordance with the parameter size. Therefore, the circuit scale of the recording apparatus required for the recording adjustment and the area in which the recording parameters are stored do not change. The time required to adjust the recording conditions does not become too long. (Second embodiment) Hereinafter, an embodiment of a recording apparatus, a reproducing apparatus, an evaluating apparatus, a recording method, and a reproducing method according to the present invention will be described. Fig. 34 is a block diagram showing the configuration of the information recording and reproducing apparatus 1 that functions as a recording device, a reproducing device, and an evaluation device β. The information recording and reproducing apparatus 100 includes a recording control unit 1〇1 and a reproduced signal processing unit 102. The recording control unit 101 includes an optical head 2, a recording pattern generating unit 11, a recording compensating unit 12, a laser driving unit 13, a recording power setting unit 14, a information recording control unit 15, and a recording compensation parameter determining unit 16. The reproduced signal processing unit 102 includes an optical head 2, a preamplifier unit 3, an agc unit 4, a waveform equalizing unit 5, 58 201021037 A/D converting unit 6, a PLL unit 7, a pR equalizing unit 8, and a maximum probability decoding unit 9. And the edge shift detecting unit 10. The information recording and reproducing apparatus 100 can load the information recording medium. The information recording medium 1 is a recording and reproducing device for optically performing information, such as a compact disc. The optical head 2 converges the laser light passing through the objective lens to the track on the information recording medium κ information recording layer. At the time of recording, a recording mark is formed on the track by using laser light of a predetermined recording power. At the time of reproduction, the reflected light generated by receiving the laser light of the reproducing power of the orbit is generated to represent the reproduction signal of the recording 9 information recording medium than the information. The number of openings of the objective lens is 0.7 to 0.9, which is better for 〇·85. The wavelength of the laser light is below 41〇11111, and the better is 405nm. The preamplifier section 3 amplifies the analog reproduction signal by a predetermined gain and outputs it to the AGC section 4. The AGC unit 4 amplifies the reproduced signal by using a preset target gain so that the level of the reproduced signal output from the A/D converter 6 can reach a certain level and outputs it to the waveform equalizing unit 5. The waveform equalizing unit 5 has a filter characteristic of blocking the lpf characteristic of the high frequency region of the reproduced signal and a predetermined frequency range of the amplified reproduced signal, and can form the waveform of the reproduced signal into a desired characteristic, and is directed to the A/D conversion unit 6 Output. The PLL unit 7 generates a reproduction clock synchronized with the reproduced signal after the waveform equalization, and outputs it to the A/D converter unit 6. The A/D conversion unit 6 samples the reproduced signal in synchronization with the reproduction clock output from the PLL unit 7, and converts the analog reproduction signal to the digital reproduction signal, and goes to the PR equalization unit 8, the PLL unit 7, and the AGC unit 4. Output. The PR equalization unit 8 has a frequency characteristic that is set such that the frequency characteristic of the reproduction system is maximized 59 201021037 Probability decoding unit 9 (for example, '卩11 (1, 2, 2, 2, 1) equalization characteristics) The PR signal is equalized and decoded by the PR equalization processing unit, and the PR equalization processing performs suppression of high-frequency area noise and additional intentional inter-symbol interference. The PR department can also have a shirt such as Ιιηρ_

The ReSP〇nSe) filter uses the LMS (The Least-Mean Square) algorithm to adaptively control the valve coefficients (refer to "Appropriate Signal Processing for 3 Ports". The maximum probability decoding unit 9 (for example, a Viterbi decoder) decodes the reproduced signal that is equalized by the PR in the PR equalization unit 8 using the maximum probability decoding method, and outputs the binarized data, which is based on the maximum probability decoding method. The code rule is deliberately attached to the type of partial response, and the most sure sequence is presumed. By demodulating the binarized data, the information recorded on the information recording medium 1 can be obtained, that is, the user data is obtained. The edge shift detecting unit 10 receives the waveform-shaped digital reproduced signal output from the pR equalizing unit 8 and outputs the binary signal by the maximum probability decoding unit 9. The edge shift detecting unit 10 compares the migrated data column and the binary signal shown in FIG. 8 to FIG. 1 , and the binary signal and the shifted data column shown in FIG. 8 to FIG. When they match, the most confident first state transition column and the second sure second state transition column are selected according to Fig. 8 to Fig. 1 . Based on the result, the ideal value of the state transition column (PR equalization ideal value, refer to Fig. 8 to Fig. 1) and the distance of the digital reproduction signal, that is, the operation metric. Further, the difference between the metrics calculated by the two state transition columns is calculated. Finally, the edge shift detecting unit 10 assigns the aforementioned metric difference according to each pattern of the always-end edge of the recording mark according to the binary signal, and the edge shift is sought from the optimum value of the recording compensation parameter for each pattern 60 201021037. The δ record compensation parameter determination unit 16 classifies the data sequence composed of the complex record marks and the complex intervals provided between the plurality of record marks into at least one record mark and at least one interval, and determines the record. The conditions are the data patterns. Specifically, the length of the ninth record mark included in the data column is combined with the length of the ith interval of the position adjacent to or before the first record mark, and the position is not adjacent to The second recording mark is further classified according to the length of the second recording mark at the position of the first interval, and the recording condition is assigned in accordance with each of the classified data patterns. Or, using the combination of the length of the first record symbol included in the data column and the length of the third interval of the position adjacent to or behind the first record mark, and depending on the position not adjacent to the second interval Further, the length of the second interval adjacent to the position of the recording mark is further classified, and the recording conditions are assigned according to the respective data patterns classified. In other words, the recording compensation parameter determining unit 16 determines the recording conditions classified according to the respective data patterns, that is, the pattern table in which the recording parameters are determined. Further, the determination of the pattern table does not need to be performed in accordance with each recording operation, and can be uniquely determined in accordance with the type of the information recording medium 1 to be recorded, the conditions such as the recording speed, and the pRML method of the reproduction signal processing. The information recording control unit 15 changes the setting of the recording parameters in accordance with the pattern table determined by the recording compensation parameter determining unit 16. However, the information recording control unit 丨5 is the portion of the 201021037 which is determined by the edge shift detecting unit 1 to detect the amount of edge shift detected by the edge shift detecting unit 1 . Therefore, the pattern classification of the edge shift detecting unit 10 and the classification of the pattern table of the recording compensation parameter determining unit 16 are preferably the same. The recording pattern generating portion 11 modulates the information to be recorded, and generates an NRZI signal as a data column. The recording compensating unit 12 generates a recording pulse train that follows the NRZI signal based on the recording parameters that have been changed by the information recording control unit 15. The recording power setting unit 14 sets the respective recording powers such as the peak power pp and the bottom power. The laser drive unit 13 controls the laser light emission operation of the optical head 2 in accordance with the recording power set by the recording pulse train and the recording power setting unit 14.

Next, the operation of the information recording and reproducing apparatus 1 will be described in detail. As shown in Fig. 34, after the information recording medium is loaded, the optical pickup 2 is moved to a recording area for adjusting the most suitable recording parameters. The recording area is, for example, an adjustment recording power set on the innermost circumference of the information recording medium and a recording pulse recording area (OPC area).

The recording pattern generating unit (10) records the job and generates a pattern for recording and adjusting the data, and outputs it to the recording compensating unit 12. The information recording control 15 applies the initial recording material stored in the recording/reproducing device (for example, Keelong) to the recording condition of the pattern table determined by the recording compensation pattern determining unit 16 and records the pulse waveform shape and the recording power of the recording power. . The conditions can also be recorded in the batch area of the information recording body. In this case, the laser light can be irradiated to the PIC area, and the information recorded by the information recording medium is applied to the initial recording condition.

The recording compensating unit 12 follows the recording adjustment pattern based on the shape of the recording pulse wave transmitted from the information recording control unit 15, and produces a recording pulse train of the emission waveform of Z 62 201021037. The recording power setting unit 14 sets the respective recording powers such as the peak power Pp and the bottom power, in accordance with the initial recording conditions of the information recording control unit 丨5. The laser drive unit 13 controls the laser light emission operation of the optical head 2 in accordance with the recording pulse 歹J generated by the recording compensation unit 12 and the recording power set in the s recording power setting unit 14, and records the recorded data in the information recording. Media i. Next, the information recording and reproducing apparatus 100 reproduces the recorded data recorded. The optical head 2 produces an analog reproduction signal indicating information read by the information recording medium. The analog reproduction signal is amplified by the preamplifier section 3, and is AC-coupled and input to the AGC section 4. The AGC unit 4 adjusts the gain so that the output of the waveform equalization unit 5 in the subsequent stage has a constant amplitude. Waveform shaping is performed by the waveform equalization unit 5 of the analog signal output from the input unit 4: the analog reproduction signal of the waveform shaping is output to the A/D conversion unit 6. The A/D conversion unit 6 and the PLL unit 7 output The reproduction clock synchronization is performed to sample the analog reproduction signal, and the pLL unit 7 extracts the reproduction clock from the digital reproduction signal sampled by the A/D conversion unit 6. The digital reproduction signal input by the A/D conversion unit 6 is sampled. To the pR equalization unit 8. The PR equalization unit 8 shapes the waveform of the digital reproduction signal. The maximum probability decoding unit 9 performs maximum probability decoding on the waveform-shaped digital reproduction signal output from the PR equalization unit 8, and generates a binary value. The edge shift detecting unit 10 receives the waveform-shaped digital reproduced signal output from the PR equalizing unit 8 and the binary signal outputted from the maximum probability decoding unit 9. Further, the edge shift detecting unit 1 Seeking the offset from the best value of the recording compensation parameter, that is, seeking the edge shift. The output edge is shifted to the capital 63 201021037 The recording control unit is 5. 5 3 _ the system is 5 by the edge shift detecting unit 1 ( Number (for example, existence and It is necessary to change the record parameters of the record of the setting, etc.) to perform the offset of the value (for example, the error of 20%), the target (4) is; the edge shift (4) is the most appropriate of the parameters of the Jing == two moves: ' The information recording and reproducing device of the present embodiment

For the process of recording, the value of the =:::: a record of the interval offset from the edge of the record mark

She is Jing. W (four) times to delete L to provide more stability... record of error rate reduction 'This embodiment is an information recording and reproducing apparatus including a reproduction unit 2 processing unit for explaining the recording and reproducing operation, but (4) is configured to have only The recording device of the recording control unit 101 for recording control. In the above-described pattern table of the above-described embodiment, although the length of the recording record of 5 or more and the length of the interval are integrated into one, it is also possible to individually set the recording mark and the interval from the fifth to the longest mark. Further, in the above-described embodiment, the side of the recording pulse wave is changed for each pattern. 64 201021037 j Li Jin, 彳 - The recording pulse wave can be shifted as a whole in accordance with the pattern. In this production form, since the recording parameters for adjusting the recording are reduced, it is possible to reduce the information recording and reproducing apparatus _ betting capacity for storing the parameters recorded. μ

^ Also, the recording conditions classified by the above pattern table can also be recorded in the information reading medium β. In this way, it is necessary to determine the pattern table, which can be reduced by the type of information recording medium and the recording speed. X, in the case where the e-recording condition of the above-mentioned information medium is best described, the adjustment of the recording parameter can be deleted, or the target value of the edge shift in the above-described embodiment can be reduced to 0. The position can also be set according to the type and recording speed of the information recording media of each brand, or according to the 疋 pattern. For example, in the information recording reproduction I set PW': the storage target value. Moreover, since the information record of the new information recording medium can be correspondingly stored by storing the corresponding new :, :=: target value of the body: = in the rewritable memory. The x' corresponding to the new pair is the optimum two m values, which can be determined by reproducing the information recording and reproducing the recording marks formed by the parameters of the recorded and recorded parameters. For example, the case where the code of the short symbol length of 2 is equal to the state of the maximum probability decoding W2, 2, and the state of the shirt is described, but the present invention is not limited thereto. The formula _^ can be made in the case where the shortest mark length is 2 or 3 and the code and the equalization square are cut, the shortest mark length is 2 or 3, and the length is 3, etc. = C1, C1 , CG) and the shortest code - equalization method PR (C〇, C1, C2, cl, c〇m 65 201021037 shape. CO, Cl, C2 are arbitrary positive numbers. Again, the above embodiments are in each In the pattern table, although the symbols and intervals of the shortest symbol length are only classified in detail, the present invention is not limited thereto. For example, 'the same can be applied to the shorter and shorter marks than the shortest mark length. It can be applied to longer marks and spaces. The information recording medium of the above embodiments is not limited to CDs, DVDs, BDs, etc., and can also be applied to magneto-optical media such as MO (Magneto-Optical Disc), and digital The recording code (〇 or 1) of the number is an information recording medium for recording information by changing the length _ degree or phase of the information formed by the polarity interval (the present embodiment is the recording mark and the interval). Part of the recording and reproducing device is used as an adjustment for information The recording condition of the recording pulse shape recorded in the information recording medium is adjusted, and the entire device can be manufactured as a one-wafer LSI (semiconductor integrated circuit) or a part thereof. Further, when a part of the recording and reproducing device is manufactured as one wafer In the case of LSI, the signal processing time for adjusting the recording parameters can be greatly shortened. Each part of the recording and reproducing device can be independently manufactured as an LSI. (Regarding the recording waveform) In the above embodiment, the recording pulse train is formed. The recording pulse wave has a multi-pulse waveform 'but a recording pulse wave of another waveform may be used. Hereinafter, the recording pulse wave of the present invention including the multi-pulse waveform may be described with reference to FIGS. 35 to 37. The recording of the information recording medium is carried out by following the predetermined modulation rules 'modulating the information to be recorded (user data or original data) to generate a plurality of recording modulation codes, illuminating the pulse-like beam, Forming a complex number 66 201021037 Record marks and intervals (interval between record marks and record marks), the complex record marks and intervals have corresponding corresponding complex The length of the modulation code is recorded. For the generation of the pulse wave beam according to which waveform, three examples are explained below. Any one of the 35th to 37th drawings is for convenience of explanation, and the shortest symbol is 2T ( Although T is the reference clock and the reference period of the modulation, the present invention is not limited thereto. In the description of Fig. 1, the length of the recording symbol and the interval is 2 Τ to 8 Τ, but the 35th to Figure 37 is a diagram containing 9 。. This 9 Τ is used as a pattern of sync code (synchronization code sequence). Usually, the data (original original data / binary data before modulation) S has been recorded in δ When recording a medium, it is divided into predetermined sizes, and the data divided into predetermined sizes is further divided into frames of a predetermined length, and a predetermined synchronization code/synchronization code sequence (frame synchronization area) is inserted for each frame. The data divided into frames is recorded as a sequence of modulated data codes (frame data area) according to a predetermined modulation rule consistent with the characteristics of the recording and reproducing signals of the recording medium. On the other hand, since the above-described predetermined modulation rule is not applied to the synchronization code/synchronization code sequence inserted between the frames, it is possible to include a pattern other than the code length which is restrained by the modulation rule. The synchronization code/synchronization code sequence is a sequence of reproduction processing when the data to be recorded is reproduced. As a predetermined modulation rule, for example, when the 1-7 modulation is performed, since the length of the symbol is limited to 2T to 8T, as the pattern including the synchronization code, the 1-7 modulation is not used. &lt;Ν-1 strategy> Fig. 35 shows the first recording waveform. The second recording waveform is a multi-pulse type strategy, that is, including a plurality of pulse waves (multi-pulse waves), and the complex pulse waves are arranged in the first pulse wave (also referred to as an initial pulse wave, width Tt 〇p) ), arranged at the end of the most 67 201021037, the end of the pulse wave (width Tip), and the intermediate pulse wave (width Tmp) arranged between the initial pulse wave and the last pulse wave. Further, as a parameter relating to the recording power, Pw is the recording power, Pbw is the bottom power, Pe is the cooling power (cooling power), and Ps and Pe are the partial powers (burnable type: ps is the interval power, rewritable type) :Pe is the elimination power). Recording power? The rating can also be referred to as peak power pp. The bottom power Pbw can also be expressed as Pb. The recording waveform for recording the shortest mark (2T) does not include the last pulse and the intermediate pulse, and the recording waveform for recording the second short mark (3T) does not include the intermediate pulse. From the recording waveform for recording the third short mark (4T), the inter-phase pulse wave is included, and for every 1T increase, the pulse number of the intermediate pulse wave is also increased by one. One of the characteristics of the first recording waveform is that the number of pulse waves included in the recording waveform for recording the nT symbol (η is a natural number) is (η-1). - As shown below, various parameters can be set according to the length of the interval between the recording mark and the adjacent mark. First, for example, the rising position dTtop and the width Ttop of the initial pulse wave may be classified into three types: the length of the recording mark being "2T", "3T", or "4T or more", or the length of the preceding interval of the adjacent pulse is It is set to four types of "2", φ "3", "4", and "5" or more. Further, for example, the width of the pulse wave Tip can be classified into two types of "3T" and "4T or more". Further, for example, the end position (the partial power level: used to set the start positions of Ps and Pe) dTs for setting the cooling power level Pc may be classified into the length of the recording mark as "2T", "3T", " It is set by 3 types of 4T or more. &lt;N/2 Strategy> Fig. 36 shows the second recording waveform. The second recorded waveform is also a multi-pulse 68 201021037 type strategy. The recording waveform for recording the shortest mark (2T) and the second short mark (3T) does not include the last pulse and the intermediate pulse, and records the recording waveforms of the third short mark (4Τ) and the fourth short mark (5Τ). Does not contain intermediate pulse waves. The intermediate pulse wave is included from the recording waveform for recording the fifth short mark (6Τ), and the number of pulse waves is increased by one for every 2Τ' intermediate pulse. The second recording waveform is characterized in that the number of pulse waves included in the recording waveform for recording the mT symbol (m is a natural number) is (m + 2). As shown below, various parameters can be classified and set according to the length of the recording mark. First, for example, the rising position dTtop and the width Ttop of the initial pulse wave can be classified into four types: the length of the recording mark is "2T", "3T", "4T, 6T, 8T", "5Τ, 7Τ, 9Τ". . Further, for example, the rising position dTmp of the intermediate pulse wave may be classified into two types of the lengths of the recording marks "6T, 8T" and "7T, 9T". Further, for example, the classification of the former can be made to coincide with the position of the reference clock, and the classification of the latter is offset by the reference clock position by T/2. Further, for example, the rising position dTlp and the width Tip of the end pulse wave may be classified into two types of lengths of "4T, 6T, 8T" and "5T, 7T, and 9T". Further, 'dT1P' may be made such that the classification of the former coincides with the reference clock position. The latter classification is offset by the reference clock position by T/2. Further, for example, the end position (the partial power level: used to set the start position of Ps and Pe) dTs for setting the cooling power level Pe may be classified into the length of the recording mark as "2T", "3T", " 4T, 6T, 8T", "5T, 7T, 9T" are set in 4 types. 69 201021037 &lt;Fort type&gt; Fig. 37 shows the third record waveform. The third recording waveform is different from the first and second recording waveforms of the multi-pulse waveform strategy, and is set such that the power level between the pulse waves of the recording power Pw is not lowered to the bottom power Pbw, but a shape of a certain intermediate power Pm is taken. (castie) type strategy). The initial pulse wave (width Ttop) disposed at the head, the last pulse wave (width Tip) disposed at the last end, and the intermediate pulse wave (width Tmp) disposed between the initial pulse wave and the last pulse wave are configured. Further, as a parameter relating to recording power, Pw is recording power, pm is intermediate power, Pc is cooling power (cooling power), and ps and pe are partial power (burnable type: Ps is interval power, rewritable type: Pe is to eliminate power). The recording waveform for recording the shortest mark (2T) does not include the last pulse and the intermediate pulse, and the recording waveform for recording the second short mark (3T) does not include the last pulse, and is used to record the third short mark (4T). The recording waveform of the above recording mark starts to include the last pulse wave and the intermediate pulse wave. Moreover, the end position of the initial pulse wave (which is used to record the 3rd recording waveform of the recorded value of 3τ or more) coincides with the start position of the intermediate pulse wave, and is used to record the intermediate pulse wave of the recording waveform of the recording mark of 4 or more. The final position is the same as the starting position of the last pulse. Also, the Fort type strategy has several shapes. Specifically, there are a casttle-shape, an L-shape, and a single-pulse shape (Μ〇η〇 puhe-shape). a shape of a fort, a recording pulse wave formed by a pulse wave for forming a recording mark has a shape including a first interval, a second interval, and a third interval; the first interval is determined by the aforementioned recording pulse wave - a power level (recording power Pw), wherein the third region _ is set by the second power 201021037 level (intermediate power pm) lower than the first power level by the end position of the first interval, the third The location of the second interval is higher than the foregoing second power level and is the same power level as the first power L region level (the recording power Μ or the low power level shape has In the shape of the fort, the power level of the third interval is matched with the power level between the second and the second. The single pulse shape has the power level of the second interval and the third interval in the fort shape. Those who are all in the same shape.

Further, although in Fig. 37, the power level of the first section and the power level of the third zone are made, for convenience of explanation and not too complicated, they may be set to different levels. In the foregoing description, the pulse wave set to the power level of the first section is represented as the initial pulse wave, and the pulse wave set to the power level of the second section is represented as the intermediate pulse wave, and the power bit set to the third interval is set. The quasi-pulse wave is expressed as the end pulse wave. In the following description, the expressions of the previous description (initial pulse wave, intermediate pulse wave, and end pulse wave) are also used. As shown below, various parameters can be classified and set in accordance with the length of the interval between the recording mark and the adjacent one. First, for example, the rising position dTtop and the width Ttop of the initial pulse wave may be classified into three types of the length of the recording mark as "2T", "3T", or "4T or more", or/or, for example, classified into adjacent leading intervals. The length is set to three types of "2", "3", and "4" or more. Further, for example, the width of the end pulse wave Tip can be classified into one type of the recording symbol length "4T or more" and set (including all the 4T or more of the end pulse wave set to the same width). Further, for example, for setting the cooling The start position dTc of the power level Pc can also be classified into the length of the record mark as "Ding Yi 'factory Ding Yi ~ ^ Ding or above" 3 71 201021037. Further, for example, the end position for setting the cooling power level Pc (the partial power level: used to set the starting position of Ps &amp; pe) dTs can also be classified into the length of the recording mark as ^丁^^丁^" For convenience of explanation, the classification of each parameter of the waveform of the recording pulse wave which can utilize the N_1 strategy, the N/2 strategy, and the fort type of the present invention is different from the classification of the above embodiment. For example, Classification is based only on the classification of the length of the record mark, or only by the combination of the length of the record mark and the length of the interval adjacent to one of the sides. However, the classification of the above embodiment can be suitably used for the record pulse waves. Specifically, for example, as shown in FIG. 22 and FIG. 23, in the waveforms of the N-1 strategy, the N/2 strategy, and the recording pulse of the fort type, it may also be used to adjust the recording mark. The recording parameters of the beginning edge are classified by the combination of the length of the record: M(1) and the length of the front interval S: (i-Ι). When M(1) is below a predetermined length (for example, the shortest mark), the rear interval is further combined: 8〇+1) For classification, the classification of the length of the S(i+1) is classified by s(i+1) below a predetermined length (e.g., the shortest interval) or longer than a predetermined length. Or, for example, as shown in Figs. 28 and 29, in the waveforms of the N-1 strategy, the N/2 strategy, and the recording waveform of the fort type, the terminal for adjusting the recording mark may also be used. The edge recording parameter is classified by the combination of the length of the record mark: M(i) and the length of the rear interval S: (i+Ι), and when M(i) is below a predetermined length (for example, the shortest mark), further The classification is based on the length of the front interval: 8屮1}, and the classification of the length of the SO·1) is classified by S(il) below a predetermined length (for example, the shortest interval) or longer than a predetermined length. 201021037 Further, this classification method can be made different by the recording density (about 25 GB for one layer and about 32 GB and/or 33.4 GB for one layer) and the type of recording medium (burnable type, rewritable type, etc.). In addition, when setting each pulse wave and setting each power level, the position or width can be Τ/16 as the early position even in the recording pulse of either the Ν·1 strategy, the N/2 strategy, or the Fort type. Make adjustments. Or, in a finer case / 32 units. Moreover, the adjustment unit can be made different by the recording density (about 25 gb for the layer and about 32 GB and/or 33.4 GB for the first layer) and the type of the recorded media (burnable type, rewritable type, etc.). . Since the smaller the resolution that can be set, the finer the recording mark can be finely adjusted, the resolution that can be set is changed when a more precise recording adjustment is desired. Therefore, by setting the recording pulse condition corresponding to the resolution of the recording pulse wave setting (it is preferable to set the resolution of the recording pulse wave setting), the recording mark can be formed more appropriately. From the viewpoint of the recording speed, in terms of the relationship between the waveform recording waveform of the recording pulse wave and the recording speed, the recording waveform of the N/2 strategy is suitable for high-speed recording compared with the recording waveform of the strategy, and the recording waveform of the Fort type is N/2. The recorded waveform of the strategy is suitable for high speed recording. This is because the recording waveform of the N/2 strategy is more than the recording power pW2 of the recording waveform of the Fort, and the recording waveform of the N_〗 strategy is more than the recording power of the recording waveform of the N/2 strategy. That is, since the accumulation of the pulse wave rise time and the fall time is required, the high speed processing is affected. With this in mind, when recording conditions on a disc, it can also be as shown below. First, when the recording condition corresponding to the recording speed: lx is stored, for example, the storage of the relevant parameters of the recording waveform of the N-1 strategy is necessary, and the storage of the relevant parameters of the waveform parameters recorded by the 2 73 201021037 is selected. Further, in addition, when the recording speed is 1x, for example, the third recording waveform may not be applied. In addition, when storing the corresponding recording speed: 2x recording conditions, for example, the storage of the relevant parameters of the waveform of the N-1 bundle can be selected as the selection, and the storage of the relevant parameters of the recorded waveform of the n/2 strategy is selected. The storage of the relevant parameters of the record waveform of the Fort type is selected. Further, for example, it is also necessary to store at least one of the correlation parameter of the recording waveform of the N-1 strategy and the correlation parameter of the recording waveform of the N/2 strategy. In addition, when the storage condition corresponding to the § recording speed: 4x is stored, for example, the storage of the relevant parameters of the s-recorded waveform of the fort type may be necessary. Further, when the recording speed is 4x, for example, the recording waveform of the N-1 strategy and the N/2 strategy may not be applied. Further, when storing the corresponding recording speed: 6x recording condition, for example, it is also necessary to store the relevant parameters of the δ-recorded waveform of the fort type. Further, in addition, when the recording speed is 6 χ, for example, the recording waveform of the strategy and the n/2 strategy may not be applied. In addition, when storing the recording speed corresponding to the recording speed of 8 χ or more, for example, the same conditions as 4 χ and 6 , can be used, that is, the storage of the relevant parameters of the recording waveform of the fort type is necessary, and in addition, the recording speed is 6 χ. For example, the recorded waveforms of the Ν-1 strategy and the Ν/2 strategy may not be applied. Further, regarding the storage of the above recording conditions, the HTL (HightoLow: the reflectance of the recording portion is lower than the reflectance of the unrecorded portion) and the LTH (Low to High: the reflectance of the recording portion is higher than that of the unrecorded portion) In the case of the same content, you can store the same content and store different content. 201021037 x ’ can also be set according to the setting of recording speed (recording line speed). In the same optical condition, the amount of information per unit area increases as the recording speed is lowered and the recording density becomes high. However, if I have become high, it is susceptible to the heat of the before and after recording marks. Therefore, the recording pulse condition can be formed more appropriately by setting the recording pulse condition by setting the line speed (which is preferable to set the line speed). (About Blu-ray Disc) As an example of a recording medium to which the present invention can be applied, there are Blu-ray Disc (BD) and other specifications of optical discs, and BD will be described in detail herein. Corresponding to the characteristics of the recording film BD is of a burnable type, a write-once type bd-R, a rewritable type BD-RE, and the like. The present invention is applicable to any type of recording medium of R (burnable type/write once) and RE (rewritable type) of BD and other optical discs. The main optical constants and physical formats of Blu-ray discs are revealed in the ry xiao yi 彳 4 4 4 4 4 4 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才 才Reveal the white papers that are included. In BD', the wavelength of the laser light and the number of openings (NA: Numerical Aperture) are about 0.85 when the wavelength is about 405 nm (the allowable value of the error range of 4 〇 5 nm for the relative standard value is ±5 nm) is about 0.85. The allowable value of the error range of the standard value of 0.85 is ±0. 01, which is 0.84~0_86). The track of the objective lens BD is about 0·32μπι (if the tolerance value of the relative standard value of 0.320μηη is ±0.010) Μιη, is 0.310~0·330μηι) 'The information recording layer is provided with 1 or 2 layers. The recording surface of the information recording layer is composed of one layer of one side or two layers of one side of the incident side of the laser light, and the distance from the surface of the protective layer of the BD to the recording surface is 75 μm to ΙΟΟμηι. 75 201021037 The modulation signal is modulated by 17PP, and the shortest mark of the recorded mark (2T mark: T is the period of the reference clock (the reference period of the modulation when the mark is recorded by the predetermined modulation rule)) The mark length is 0·149 μηι (or 0.138 μηι) (channel bit length: Τ is 74.50 nm (or 69.00 nm)). Recording capacity is single-sided single layer 25GB (or 27GB) (more specifically 25.025GB (or 27.020GB)) or single-sided 2 layer 50GB (or 54GB) (more specifically 50.050GB (or 54.040GB)) . The channel clock frequency has a transfer rate of 66MHz at standard speed (BDlx) (channel bit rate 66.000Mbit/s) 'Transfer rate at 4x speed (BD4x) is 264MHz (channel bit rate 264.000Mbit/s), The 6x speed (BD6x) transfer rate is 396MHz (channel bit rate 396_000Mbit/s), and the 8x speed (BD8x) transfer rate is 528MHz (channel bit rate 528.000Mbit/s). The standard line speed (reference speed, lx) is 4.917m/sec (or 4.554 _ m/sec). The linear velocities of 2x (2x), 4x (4x), 6x (6x), and 8x (8x) are 9.834m/sec, 19.668m/sec, 29.502m/sec, and 39_336m/sec, respectively. Although the linear velocity higher than the standard linear velocity is generally a positive integer multiple of the standard linear velocity, it is not limited to an integer, and may be a positive real multiple. ® can also be defined as a linear speed slower than the standard line speed of 0.5 times (0.5x). Further, the above various conditions have been commercialized, and it is mainly related to one layer or two layers of BD of about 25 GB (or about 27 GB). In order to increase the recording capacity of the BD, a high-density BD having a recording capacity of about 32 GB or about 33.4 GB and a BD having a three-layer or four-layer layer are also under review. An example of such a BD will be described below. &lt;Multilayering of the information recording layer&gt; 76 201021037 When the laser reading layer (cover layer) is used, the composition of the single-sided disc is recorded, the information recording layer is made of 2 layers. In the above, a plurality of information recording layers must be provided between the substrate and the protective layer. A configuration example of such a multilayer disc is shown in Fig. 38. The optical disk shown in Fig. 38 has an integer of (n+1) layers above the information recording layer). Specifically, the optical disk is sequentially laminated with a cover layer 5〇1, (n+1) information recording layers (Ln to L〇 layers) 5〇2, and a substrate finely formed from the surface on the incident side of the field light 200. Further, an intermediate layer 503 serving as an optical buffer material is inserted between each of the information recording layers 502 of (n + ι) 0 pieces. That is, a reference layer (L〇) is disposed at an innermost position (a position farthest from the light source) separated by a predetermined distance from the light incident surface, and the information recording layer (LI, L2) is laminated from the reference layer (10) toward the light and the incident surface side. .....Ln) and add layers. Here, in comparison with the case of a single-layer disc, the distance from the light incident surface to the reference layer L〇 of the multilayer disc can be made almost the same as the distance from the light incident surface of the single-layer disc to the information recording layer. (eg 〇.lmm degree). By the fact that the distance to the deepest layer (the farthest layer) is constant by the number of layers (that is, almost the same distance as the case of a single Φ layer disc), it is possible to ensure that the relevant reference layer is independent of a single layer or a plurality of layers. Interchangeability of access. Further, it is possible to suppress the influence of the inclination which increases as the number of layers increases. The effect of tilting can be suppressed because the innermost layer is most affected by the tilt, but by making the distance to the innermost layer almost the same distance as the single layer disc, even if the number of layers is increased, the distance to the innermost layer will not increase. . Further, the traveling direction of the light spot (or the tracking direction or the spiral direction) may be a same direction or a reverse path. The same direction • The path is in all the information recording layers, and the light points travel in the same direction. That is, the direction of travel of the light 77 201021037 point is in the direction from the inner circumference toward the outer circumference of the full information recording layer, or from the outer circumference toward the inner circumference in the full information recording layer. In the aspect, the reverse path is in the information recording layer and the information recording layer adjacent to the information recording layer, and the light spot travels in the opposite direction. That is, when the rod advance direction of the light spot of the reference layer (L0) is from the inner circumference to the outer circumference, the traveling direction of the light spot of the information recording layer L1 is from the outer circumference to the inner circumference, and the information recording layer L2 The direction of travel of the light spot is from the inner circumference to the outer circumference. That is, the traveling direction of the light spot is in the direction from the inner circumference to the outer circumference in the information recording layer Lm (m is 〇 and even number), and the information recording layer Lm+1 is directed from the outer circumference to the inner circumference. Or, the information recording layer Lm (m is 0 and an even number) is in the direction from the outer circumference to the inner circumference, and the information recording layer Lm+1 is in the direction from the inner circumference to the outer circumference. The thickness of the protective layer (cover layer) is set to be thin, with an increase in the number of openings, NA' shortening the focal length, or suppressing the influence of the skew caused by the tilt. The number of openings is set to 0.45 in the CD and 0.65 in the DVD, and is set to about 0.85 in the BD system. For example, the thickness of the protective layer may be 10 to 200 μm in the total thickness of the information recording medium of 1.2 mm. More specifically, in a substrate of 1.1 mm, a single-layer disc can be provided with a transparent protective layer of 0.1 mm, and a 2 ® layer disc can also be provided with a 0.025 mm intermediate layer at a protective layer of 0.075 mm (Spacer Layer). ). &lt;Configuration Example of Layer 1 to Layer 4&gt; Here, Fig. 39 shows a configuration example of a single layer disc, Fig. 40 shows a configuration example of a layer 2 disc, and Fig. 41 shows a composition of a layer 3 disc. For example, Fig. 42 shows a configuration example of a 4-layer disc. As described above, when the distance from the light-irradiated surface to the reference layer L0 is constant, the total thickness of the disc in any of the discs is 78 201021037, which is about 1.2 mm (including the printing, etc., preferably 1. The thickness of the substrate 500 is about 1.1 mm. Further, the distance from the light irradiation surface to the reference layer L0 was about 0.1 mm. In the single-layer disc shown in Fig. 39 (in the case of n = 第 in Fig. 38), the thickness of the cover layer 5011 is about 0.1 mm. In the two-layer disc shown in Fig. 40 (in the case of n = 1 in Fig. 38), the cover layer 5012 has a thickness of about 0.075 mm, and the intermediate layer 5032 has a thickness of about 〇25 mm. Further, in the case of the three-layer disc of Fig. 41 (in the case of n = 2 in Fig. 38) and the four-layer disc of Fig. 42 (in the case of n = 3 in Fig. 38), the cover layer 5014 is The thickness and/or the thickness of the intermediate layer 5304 can also be thinner. Further, in the recording and reproducing apparatus using the optical head having the objective lens having such a high NA, the aberration such as the spherical aberration caused by the thickness of the surface of the disc irradiating the surface to the information recording layer converges on the information recording layer. The quality of the laser light has a great impact. Therefore, a mechanism for correcting aberration due to thickness is provided. The aberration correcting means gives aberrations to cancel aberrations generated in each information recording layer in order to correct aberration components such as spherical aberration caused by the thickness of the protective layer surface of the optical information recording medium to the information recording layer for recording and reproducing information. Aberration component. The optical design of the aberration correcting mechanism was originally used to reduce the aberration of the information recording layer of the single-layer structure medium, but it is also considered to be the aberration of the information recording medium in which the two-layer structure is recorded and reproduced. The minimum aberration in design is set to about 80|1111 to 90|1111 by the surface of the protective layer. therefore. When the recorded reproducing light converges on the information recording layer having a thickness different from the minimum aberration position, the aberration correcting means is controlled to set the aberration correction value of each information recording layer to be corrected. 79 201021037 &lt;Solid Configuration of BD&gt; Fig. 43 shows the physical configuration of the optical disk 510 to which the present invention can be applied. The disk-shaped optical disk 510 is formed with a plurality of tracks 511 which are, for example, concentric or spiral, and each of the tracks 512 forms a plurality of subdivided sector sectors. Further, as will be described later, each track 512 records data in units of blocks 513 having a predetermined size. Actually, the data is recorded on the track as a data column composed of a plurality of record marks and a plurality of intervals respectively set between the plurality of record marks as the information to be recorded. The optical disk 510 has a PIC (Permanent Information &amp; Control Data) area 514 and an OPC (Optimum Power Control) area 515 on the inner circumference side. The OPC area 515 is used in the test record to find the area that best suits the recording power of the disc or each information recording layer and the conditions for recording the pulse train before recording the user data. Can also be called a learning area. Further, in order to change the recording power and the amount of change in the recording pulse train, etc., in order to generate an environmental change such as inconsistency of the optical disc device, rapid temperature change, adhesion of dust, dust, or the like, the test recording area is performed. The pic area 514 is a reproduction-dedicated area, and the disc management information is recorded by the high-speed modulation groove. The disc official information § has recorded the PC parameters and writing strategy types required for the best recording power, the timing and length of the laser pulse generation (the recording conditions described in the second embodiment) Recommended value, recording line speed, regenerative power, model number, etc. The optical disk 510 is an information recording layer 1 layer having a recording capacity higher than that of a conventional optical disk (for example, a 25 GB BD). The expansion of the recording capacity is achieved by "increasing the recording line density", for example, by making the record number recorded on the handle 80 201021037 shorter. Here, "increasing the recording line density" means shortening the channel bit length. The channel bit is a length corresponding to the period τ of the reference clock (the reference period τ of the modulation when the symbol is recorded by a predetermined modulation rule). Moreover, the optical disk 510 can also be a multi-layered one. However, for convenience of explanation, only the board and one information recording layer are provided. Further, when a plurality of information recording layers are provided, even if the widths of the tracks provided in the respective information recording layers are the same, the marks of the respective layers can be made different in length, and the marks in the same layer are the same length, whereby the recording of each layer can be made. The line density is different. The track 512' is divided into blocks 513 according to the recording unit of the data 64 kB (kilobbit), and the block addresses are allocated in order. The block 513 can be divided into sub-blocks of a predetermined length, and three sub-blocks constitute one block. The sub-blocks are assigned sub-block numbers up to 2 in order from front to back. &lt;Record density&gt; Next, the recording density is described using Fig. 44, Fig. 45, Fig. 46, and Fig. 47. Figure 44 shows an example of a 25GB BD. The wavelength of the laser light 200 of BD is 405 nm, and the number of apertures of the objective lens 220 (Numerical Aperture: NA) is 0.85. Like the DVD, the BD records the recorded data as symbol rows 520, 521 that physically change on the track 512 of the optical disc. The shortest length in the symbol column is the "shortest mark". In the figure, the symbol 521 is the shortest token. The physical length of the shortest mark 521 at the time of 25 GB recording capacity is 0.149 μm. This is equivalent to about 1/2.7 of the DVD. Even if the wavelength parameter (405nm) and the NA parameter (0.85) of the optical system are changed, the resolution of the laser is improved, and the boundary of the record mark that the near beam can recognize is also connected to 81 201021037, that is, Close to the limit of optical resolution. Fig. 46 shows how the light beam is irradiated onto the symbol column recorded on the track 512. With the above optical system parameters, the diameter of the spot 210 of the BD is about 〇·39 μηι. When the recording line density is increased without changing the configuration of the optical system, since the spot diameter of the recording mark with respect to the spot 21 变 becomes small, the resolution of reproduction becomes poor. For example, Fig. 45 shows an example of a disc having a higher recording density than a 25 GB BD. The disc is also a laser beam having a wavelength of 4 〇 5 nm and an aperture of the objective lens 220 (Numerical Aperture: ΝΑ) 0·85. In the symbol row 524, 525 of the disc, the physical length of the shortest symbol 525 is 0.1115 μm. As compared with Fig. 44, since the dot diameter is approximately 〇39 μm, the recording marks are relatively small, and the marks are narrowed, so that the resolution of reproduction is deteriorated. The amplitude of the reproduced signal when the recording symbol is reproduced by the light beam decreases as the recording mark becomes shorter, and the inverse of the period in which the optical resolution becomes the recording mark is called the spatial frequency, and the relationship between the spatial frequency and the signal amplitude is called OTF (Optical Transfer Function). The amplitude of the signal decreases almost linearly as the spatial frequency becomes higher. The limit of regeneration where the signal amplitude becomes zero The frequency is called OTF cutoff. The graph of Fig. 47 shows the relationship between the OTF of the BD of 25 GB recording capacity and the shortest recording mark. The spatial frequency of the shortest mark of BD is about 80% with respect to 〇TF, which is close to 〇TF cutoff. Further, it can be found that the amplitude of the reproduced signal of the shortest mark also becomes about 10% of the maximum detectable amplitude, which is extremely small. When the spatial frequency of the shortest mark of the BD is very close to the 〇TF cutoff, 82 201021037, that is, the recording capacity when the reproduced amplitude hardly appears, is equivalent to about 31 GB at bd. If the frequency of the regenerative signal of the shortest mark is near or below the cutoff frequency of 〇tf, then the limit of the laser resolution may be exceeded, and the regenerative amplitude of the reproduced signal becomes small, which is an area where the SN ratio rapidly deteriorates. Therefore, it can be assumed that the recording line density of the high recording density optical disk of FIG. 45 is the frequency of the shortest mark of the reproduced signal near the cutoff frequency of the 〇TF (including the case below the OTF cutoff frequency but not significantly lower than the 〇TF cutoff frequency). To the OTF wearing frequency above the situation. The graph of Fig. 48 shows an example of the relationship between the signal amplitude and the spatial frequency when the spatial frequency of the shortest symbol (2T) is smaller than the OTF cutoff frequency and the amplitude of the 2T reproduced signal is 〇. In Fig. 48, the spatial frequency of the shortest mark length 2T is 1 12 times the OTF cutoff frequency. &lt;Relationship between wavelength and number of openings and mark length&gt; The relationship between the wavelength of the high recording density optical disk and the number of openings and the length of the mark/length is as follows. The shortest mark length is represented by TMnm, and the shortest interval length is represented by TSnm, and is represented by ''P' (when the shortest mark length + the shortest interval length), p is (TM+TS) nm. In the case of 17 modulation, p= 2T+2T=4T. Use laser wavelength λ (405nm±5nm, ie 4〇〇~410nm), number of openings 0.8 (0.85±0.01, ie 0.84~0.86), and shortest mark + shortest interval length 17 (17 In the case of change, 'Because the shortest length is 2Τ, ρ=2Τ+2Τ=4Τ) In the case of three parameters, 'If the reference Τ is reduced to satisfy the following inequality, the spatial frequency of the shortest mark exceeds the OTF cutoff frequency. Ρ ^ λ /2ΝΑ 83 201021037 By the following formula, the reference Τ of the 〇TF cutoff frequency corresponding to NA=〇85 and λ=4〇5 can be obtained. Also, the space of the shortest mark when ρ&gt; λ/2ΝΑ is satisfied The frequency is lower than the OTF cutoff frequency. τ = 405/(2x0.85)74 = 59.558nm Thus, even if only the recording line density is increased, the SN ratio will be degraded due to the limit of the optical resolution. Therefore, the system margin is _ The SN ratio degradation caused by the multi-layering of the information recording layer may be unacceptable. Especially as shown above. The frequency of the shortest recording mark starts from the vicinity of the cutoff frequency of 〇71?, and the SN ratio is significantly degraded. φ or more, the frequency of the reproduced signal of the shortest s number is compared with the frequency of the 〇tf carrier, and the recording line density is explained. In the case of high density, the relationship between the frequency of the reproduction_signal of the second short mark (the third short mark (record mark of the fourth short mark)) and the OTF cutoff frequency is based on the same principle as described above. In addition, it corresponds to the individual 5 recording density (recording line density, recording capacity). &lt;Record density and number of layers&gt; Here, the specific s recording capacity of one layer having a wavelength of 405 nm and an opening number of 〇·85, etc., when the spatial frequency of the shortest mark is near the cutoff frequency of 〇TF In time, it can be assumed to be, for example, about 29 GB (for example, 29.0 GB ± 0.5 GB or 29 GB ± 1 GB, etc.) or above, or about 3 〇 GB (for example, 3 〇. 〇 GB ± 0.5 GB or 30 GB ± 1 GB, etc.) Or above it, or about 31 GB (for example, 31.0 GB of soil 0.5 GB or 31 GB ± 1 GB, etc.) or above, or about 32 gb (for example, 32.0 GB ± 0.5 GB or 32 GB ± 1 GB, etc.) or above. 'When the spatial frequency of the shortest mark is above the OTF cutoff frequency, the recording capacity of the i layer' can be assumed to be, for example, about 32 GB (for example, 32.0 GB of soil 84 201021037 0.5 GB or 32 GB ± 1 GB, etc.) or above, or Approximately 33 GB (eg, 33.0 GB ± 0.5 GB or 33 GB ± 1 GB, etc.) or above, or approximately 33_3 GB (eg, 33.3 GB ± 0.5 GB or 33.3 GB ± 1 GB, etc.) or above, or approximately 33.4 GB (eg, , 33.4GB ± 0.5GB or 33.4GB ± 1GB, etc.) or above, or about 34GB (for example, 34.0GB ± 0.5GB or 34GB ± 1GB, etc.) or above, or about 35GB (for example, 35.0GB ± 0.5 GB or 35GB 1GB, etc.) or above. In particular, when the recording density is about 33.3 GB, a recording capacity of about 100 GB (99.9 GB) can be realized in three layers, and a recording capacity of 100 GB or more (100.2 GB) can be realized in three layers at about 33.4 GB. This is almost equal to the recording capacity of a 4-layer 25GB BD. For example, when the recording density is 33GB, the difference between 33x3=99GB and 100GB is 1GB (1GB or less), the recording density is 34GB, the difference between 34x3=102GB and 100GB is 2GB (2GB or less), and the recording density is 33.3GB, 33.3. The difference between x3=99.9GB and 100GB is 0.1GB (0.1GB or less), and when the recording density is 33.4GB, the difference between 33.4x3=100.2GB and 100GB is 0.2GB (0.2GB or less), and if the recording density is greatly expanded Then, as described earlier, precision regeneration will become difficult due to the influence of the regeneration characteristics of the shortest mark. Therefore, to suppress the large expansion of the recording density and achieve a recording density of 100 GB or more, about 33.4 GB is a realistic solution. Here, there is an option to make the optical disc have a four-layer structure of one layer of 25 GB or a three-layer structure of one layer of 33 to 34 GB. The multi-layering is accompanied by the influence of the amplitude of the reproduced signal of each information recording layer (the deterioration of the SN ratio) and the multi-layer diffused light (the signal from the adjacent information recording layer). Therefore, by selecting the three-layer structure of 85 201021037 33 to 34 GB instead of the four-layer structure of 25 GB, it is possible to suppress the influence of such diffused light with a small number of layers (three layers instead of four layers). Achieve about 100GB. Therefore, I want to avoid the multi-layered side to achieve 100. (The maker of the disc of 3 can choose 33-34GB of three-layer. On the other hand, I want to maintain the conventional format (recording density of 25GB) and realize about 1〇. The manufacturer of the 碟 之 之 , 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片If the recording density of one layer is 30 to 32 GB, the three-layer disc cannot reach 100 GB (90 to 96 GB). The 4-layer disc can achieve 120 GB or more. Among them, if the recording density is about 32 GB, the 4-layer disc The film can achieve a recording capacity of about 128 GB. The number of 128 is also a value that is convenient for the computer to integrate into a square value of 2 (the power of 2 to the power of 2), and achieves a recording density of about 100 GB with a 3-layer disc. In comparison, the regenerative characteristics of the shortest mark here are less stringent. Thus, in terms of expanding the recording density, a plurality of types of recording densities (for example, about 32 GB and about 33.4 GB, etc.) are designed, and recording densities of plural kinds are used. Combined with the number of layers, can be given For the disc manufacturer's freedom of design, for example, for a manufacturer who wants to suppress the influence of multi-layering and increase the capacity, an option of manufacturing a 3-layer disc of about 100 GB made of 33 layers of 33 to 34 GB can be given. For manufacturers who want to suppress the influence of the reproduction characteristics and increase the capacity, it is possible to manufacture a 4-layer disc of about 120 GB or more which is formed by 4 layers of 3 〇 to 32 GB. It is preferable to use the present invention in the recording condition of the recording mark recorded on the BD. At this time, it is also possible to correspond to the information recorded in the information 201021037, but the number of the layer or the distance between the information recording layers, so that δ The conditions of the recorded pulse wave are different. If the number of the information recording layer is increased, the position of the information recording layer is changed, so the distance between the information recording layers becomes larger as the number of information records increases. Short, inter-layer crosstalk increases by one or two, and the regenerative signal changes locally or in its entirety. The change does not depend on the length of the record mark in the same level and $ layer. However, the shorter the record, the greater the impact of the relative change. Therefore, the shorter the record mark, the higher the adjustment accuracy of the e-record mark. : When the present invention is applied to a multi-layer BD, it corresponds to an information recording medium or a message. Recording the pulse condition by setting the number of recorded layers or the distance between the information recording layers can form a more suitable recording mark. Further, if the number of information recording layers is increased, it is necessary to reduce the reflectance of each information recording layer. Therefore, the present invention can also be applied in the case where the reflectance is low. Further, it is also possible to record the pulse wave condition in accordance with the recording power setting range for recording the information recording layer. The recording power setting range such as the peak power can be changed in accordance with the number of layers of the information recording layer of the information recording medium. This is because the intensity of the laser light passing through the information recording layer must be changed as the number of layers is different. When recording at the same speed, the greater the recording power, the greater the recording unevenness of the response characteristics of the laser. Therefore, it is preferable to perform recording adjustment with higher precision as the recording power is larger. For example, the upper limit of the set power value of the information recording medium including the two-layer information recording layer can be set to be higher than the upper limit of the set power value of the information recording medium including the i-layer information recording layer. Similarly, the upper limit of the set power value of the information recording medium including the layer 3 information record 87 201021037 layer can be set to be higher than the set power value of the information recording medium including the layer 2 information recording layer = high; The upper limit of the set power value of the information recording medium of the layer information recording layer can be set to be higher than the upper limit of the set power value of the information recording medium including the three-layer information recording layer. Therefore, when the present invention is applied to a multi-layer BD, the recording pulse condition is set corresponding to the recording power setting range of the information recording medium, and a more suitable recording mark can be formed. [Industrial Applicability] 0 This newsletter can be used in various information recording media such as DVD_RA]V[, BD-RE, or other information recording media that record data signals by laser light and electromagnetic force. Recording and reproduction of the information recording medium t, and recording and reproducing apparatuses such as a DVD drive, a DVD recorder, a bd recorder, recording operations with other machines, and the like may be applied to other uses. [Simplified Schematic Description] [Fig. 1(a) to 1(4) are diagrams showing the recording pulse waveform and recording power for forming a data column including recording marks and intervals. 〇 [Fig. 2(a) to 2(c)] A diagram illustrating an example of the shape of the pulse wave. [Fig. 3] A diagram illustrating a conventional recording control device. [Fig. 4] A diagram illustrating a conventional recording parameter table. [Fig. 5] A diagram illustrating time series of recording marks and intervals. [Fig. 6] A diagram showing the state transition rule determined by the rll 〇, 7) recording code and the equalization mode PR (1, 2, 2, 2, 1) of the embodiment of the present invention. [Fig. 7] A trellis diagram corresponding to the state transition rule of Fig. 6 is displayed. 88 201021037 [Fig. 8] A diagram showing the state transition column pattern of PR12221ML. [Fig. 9] A diagram showing a state transition column pattern of PR12221ML. [Fig. 10] A diagram showing a state transition column pattern of PR12221ML. [Fig. 11] A diagram showing an example of the PR equalization ideal waveform shown in Fig. 8. [Fig. 12] A diagram showing an example of the P R equalization ideal waveform shown in Fig. 9. [Fig. 13] A diagram showing an example of the PR equalization ideal waveform shown in Fig. 10. [Fig. 14] An illustration of a signal evaluation device using the PR12221ML method. [Fig. 15] shows a detailed classification of each pattern of the difference degree of the detection pattern of the 卩11 (1, 2, 2, 2, 1)]^^. [Fig. 16] A diagram showing the detailed classification of each pattern of the difference metric of the 12A detection pattern of the PR (1, 2, 2, 2, 1) ML. [Fig. 17] shows a detailed classification of each pattern of the difference metric of the 检测11 (1, 2, 2, 2, 1)]^[128 detection pattern. [Fig. 18] A pattern table showing recording parameters of an embodiment of the present invention. [Fig. 19(a) to 19(p)] A diagram illustrating the recording pulse wave corresponding to the pattern table shown in Fig. 18. [Fig. 20] Another chart showing the recording parameters of the embodiment of the present invention. [21st (a) to 21 (p)]] A diagram illustrating the recording pulse wave corresponding to the pattern table shown in Fig. 20. 89 201021037 [Fig. 22] shows another chart of recording parameters of an embodiment of the present invention. [Fig. 23(a) to Fig. 23(p)] A diagram illustrating the recording pulse wave corresponding to the pattern table shown in Fig. 22. [Fig. 24] Another chart showing the recording parameters of the embodiment of the present invention. [Fig. 25(a) to 25(p)] A diagram illustrating the recording pulse wave corresponding to the pattern table shown in Fig. 24. [Fig. 26] Another chart showing the recording parameters of the embodiment of the present invention. [Fig. 27(a) to Fig. 27(p)] A diagram illustrating the recording pulse wave corresponding to the pattern table shown in Fig. 26. [Fig. 28] Another chart showing the recording parameters of the embodiment of the present invention. [Fig. 29(a) to Fig. 29(p)] A diagram illustrating the recording pulse wave corresponding to the pattern table shown in Fig. 28. [Fig. 30] Another chart showing the recording parameters of the embodiment of the present invention. [Fig. 31(a) to 31(p)] A diagram illustrating the recording pulse wave corresponding to the pattern table shown in Fig. 30. [Fig. 32] Another chart showing the recording parameters of the embodiment of the present invention. [Fig. 33(a) to 33(p)] A diagram illustrating the recording pulse wave corresponding to the pattern table shown in Fig. 32. 201021037 [Fig. 34] A block diagram showing an information recording and reproducing apparatus of an embodiment of the present invention. [Fig. 35] A view showing an example of a recording pulse waveform which can be used in the present invention. [Fig. 36] A view showing another example of the recording pulse waveform which can be used in the present invention. [Fig. 37] A view showing another example of the recording pulse waveform which can be used in the present invention. ® [Fig. 38] A schematic view showing a configuration example of an information recording medium to which the present invention can be applied. [Fig. 39] A schematic diagram showing the constitution of a single layer of information recording medium. • [Fig. 40] A schematic diagram showing the structure of the information recording medium of the second layer. - [Fig. 41] A schematic diagram showing the structure of the information recording medium of the third layer. [Fig. 42] A schematic diagram showing the structure of a 4-layer information recording medium. [Fig. 43] A schematic diagram showing the physical composition of the information recording medium. [Fig. 44] A mode diagram showing the point of the laser beam and the mark recorded on the track. [Fig. 45] shows other mode diagrams of the point of the laser beam and the mark recorded on the track. [Fig. 46] A schematic diagram showing a state in which a laser beam is irradiated onto a column of data recorded on a track. [Fig. 47] A graph showing the relationship between the OTF and the shortest recorded mark. [Fig. 48] Another graph showing the relationship between the OTF and the shortest recorded mark. [Description of main component symbols] 91 201021037 1.. Information recording media 2.. Optical head 3.. Preamplifier section 4.. .AGC section 5.. Waveform equalization section 6.. . A/D Conversion unit 7. PLL unit 8. PR normalization unit 9.. Maximum probability decoding unit 10. Edge shift detection unit 11... Record pattern generation unit 12: Record compensation unit 13... Laser drive unit 14. Recording power setting unit 15.. Information recording control unit 16. Recording compensation parameter determining unit 100.. Information recording and reproducing device 101.. Recording control unit 102: Regenerative signal processing unit 200.. .Laser light 201.. . Peak power 202.. . Bottom value power 203... Cooling power 204.. Interval power 205.. .Quench level 210.. . Spot 500.. . Substrate 501. . Covering layer 502...Information recording layer 503...Intermediate layer 510...Disc 511.. .Most track 512.. Track 513.. Block 514.. .PIC area 515.. .0 .C area 520, 521 ... symbol row 701, 704, 707... pattern detecting unit 702, 705, 708... difference metric calculating unit 703, 706, 709... memory unit

92

Claims (1)

201021037 VII. Patent application scope: 1. An information recording medium, which includes a track and a recording condition recording area, wherein the track record is composed of a plurality of record marks and a plurality of intervals respectively disposed between the plurality of record marks. The recording condition recording area may record a recording condition for recording the foregoing data column on the track to be included in the data column, and the recording mark formed on the track according to the recording condition is used as the first recording mark, When the length of the first recording mark is longer than a predetermined length, the length of the first recording mark and the length of the first interval adjacent to the position before or after the first recording mark are used to classify the aforementioned Recording condition, when the length of the first recording mark is equal to or less than a predetermined length, the length of the first recording mark, the length of the first interval, and the bit are adjacent to the first record without being adjacent to the first interval The combination of the lengths of the second intervals of the positions of the symbols classifies the aforementioned recording conditions. 2. The information recording medium of claim 1, wherein the predetermined length is the shortest length of the aforementioned recording mark listed in the foregoing data. 3. The information recording medium according to claim 1, wherein the length of the first interval is the combination of the length of the first recording mark, the length of the first interval, and the length of the second interval. The number of types is larger than the number of types of the second interval. 4. For the information recording medium of claim 1, wherein the foregoing recording condition is the number of the reference number 2010 201037 for adjusting the position of the beginning edge of the first recording mark, the foregoing! The spacing is adjacent to the interval before the aforementioned mth recording number. 5. The information recording medium of claim i, wherein the recording condition is a parameter for adjusting a position of a terminal edge of the first recording number, wherein the i-th interval is adjacent to the back of the first recording number. Separate. 6· - Kind of regenerative device, for the recycling of towels, please refer to the information record of the first item. The information recording ship includes a PIC area called disc information of the information recording medium of the county, and the regenerative apparatus has a regenerative processing unit, and the regenerative signal processing unit can perform at least the following: irradiating the laser light to the foregoing The PIC area reproduces the aforementioned disc information and directs the laser to the aforementioned track to reproduce information that has been recorded in accordance with the aforementioned recording conditions. 7. The Z-recording device is based on the recording conditions recorded on the information recording medium: and the data is recorded in the aforementioned information recording medium, the foregoing information The column system is composed of a plurality of record marks and a plurality of intervals respectively disposed between the plurality of record marks, and the device has just been described as having: a male:=two=bundle-media recording control unit, based on the information recording medium, Just as the recording condition is recorded, the information is recorded in the above-mentioned data column, and the recording mark formed on the aforementioned track according to the aforementioned recording condition form 94 201021037 is used as the first recording mark, when the first recording mark is When the length is longer than the predetermined length, the recording condition is classified using the combination of the length of the first recording mark and the length of the ith interval which is adjacent to the position before or after the first recording mark, and the first When the length of the recording mark is less than or equal to the predetermined length, the length of the first S-recorded number, the length of the first interval, and the position adjacent to the first recording mark are not adjacent to the first interval. The combination of the lengths of the second intervals classifies the aforementioned recording conditions. 8. An evaluation device for evaluating an information recording medium recorded with a recording parameter, wherein the recording parameter is used for recording a data column, wherein the data column is composed of a plurality of record marks and respectively disposed between the plurality of record marks The plural interval is formed to be included in the foregoing data column, and in the case where the recording mark of the track is formed as the i-th record mark in accordance with the foregoing recording condition, when the length of the first recorded mark is longer than the predetermined length And classifying the recording parameter by using the combination of the length of the first recording mark and the length of the first interval adjacent to the position of the first recording mark or the rear side, and narrating the first § recorded number When the length is less than or equal to the predetermined length, the length of the U-th record, the length of the first interval, and the second interval of the position adjacent to the position of the second recording mark that are not adjacent to the first interval are used. a combination of lengths for classifying the aforementioned recording parameters, wherein the evaluation device includes a regenerative signal processing unit, and the regenerative signal portion 95 201021037 is derived from the foregoing The recording medium reproduction signal generates a digital signal by using the PRMLm number processing method, and the binary signal is decoded by the digital signal, and the first state transition column and the second sureness are calculated from the binary signal respectively. The difference between the second state transition column and the reproduced signal, that is, the difference metric is calculated to detect the edge shift, and it is determined whether the information recording medium satisfies the predetermined quality based on the edge shift. 9. A recording and reproducing device for using the eighth item of the patent application scope «The flat device determines at least one of the information recording medium that satisfies the predetermined quality, and performs reproduction or recording. 10. An information recording medium comprising a recording condition recording area in which recording conditions can be recorded, and recording a data column composed of a plurality of recording marks and a plurality of intervals respectively disposed between the plurality of recording marks, the foregoing recording condition According to the length of each of the foregoing record marks, when the foregoing recording condition is used to adjust the beginning of the record mark When the parameter of the position of the edge is at least one of the conditions recorded according to the length of each of the foregoing recording marks, the length of the _ adjacent to the recording mark is below or beyond the length of the preceding record. The length is long, and it is more classified into two types. - The front rail ride is a heart 驴 _• The heart parameter of the mark is 'according to the length of each of the above-mentioned record marks. Μ Γ Γ —, the shop is adjacent to the record! The length of the interval is longer than the predetermined length, or longer than the length of the previous illusion 96 201021037, and more classified into two types. 11. A reproducing apparatus for reproducing an information recording medium of claim 10, wherein the information recording medium includes a PIC area for storing disc information on the information recording medium, and the reproducing apparatus has a regenerative signal processing unit. The reproduced signal processing unit may perform at least one of irradiating laser light to the PIC area to reproduce the disc information, and irradiating the laser light to the track to reproduce information recorded in accordance with the recording condition. 12. A recording device for recording a data item in the information recording medium according to a recording condition recorded on an information recording medium, wherein the data item is a plurality of record marks and a plurality of records respectively set between the plurality of record marks The recording device includes: a reproduction signal processing unit that irradiates a light beam onto the information recording medium to reproduce the recording condition; and a recording control unit that records information on the information recording medium in accordance with the recording condition The recording condition is classified according to the length of each of the recording marks. When the recording condition is a parameter for adjusting the position of the start edge of the recording mark, the recording condition is classified according to the length of each of the recording marks. At least one of the following is further classified into two types by a length adjacent to the rear of the preceding recording mark, or a length longer than the predetermined length, 97 201021037, when the foregoing recording condition is used to adjust the foregoing record When the parameters of the position of the edge of the mark end are Record mark length of the recording conditions are classified is at least - who, by lines adjacent to the previous recording mark of the front side at a predetermined length _ [tau] in length, or longer than the predetermined length, the more classified into two kinds. The evaluation device is used to evaluate the information recording medium on which the recording parameters are recorded, and the recording parameter is used to record the data column, which is composed of the plural recording records and the interval between the preceding material records and the narrative interval. The recording parameter is classified according to the length of each of the foregoing recording marks, and when the said miscellaneous item is a parameter for the position of the beginning edge of the recording mark, the recording is classified according to the length of each of the foregoing recording marks. The condition at least H is further classified into two types by being adjacent to the aforementioned recording mark - after the rear side _ length is less than a predetermined length, or longer than the predetermined length, and the rainy month is described as a condition for adjustment When the parameter of the position of the terminal side of the record mark is at least "the recording condition classified according to the length of each of the record marks", the length of the front side _ adjacent to the record mark is a predetermined length In the town, the predetermined length is long, and the classification is further classified into two types. The evaluation device includes a reproduction shouting processing unit and the reproduction signal processing. The 产生 system generates a digital signal from the signal reproduced by the information recording medium using the diaphragm signal processing method, and the binary signal is used to decode the binary signal 98 201021037 signal, and the second-valued signal is used to calculate the most confident third state transition. The column and the second difference between the second state transition column and the reproduced signal, that is, the difference metric are respectively calculated to detect the edge shift, and it is determined whether the information recording medium satisfies the predetermined quality based on the edge shift. 14. A recording and reproducing apparatus for performing at least one of reproducing or recording an information recording medium that satisfies a predetermined quality by the § parity apparatus of the scope of the patent application. 15) a tribute recording medium comprising at least one of a track, a PIC area in which a recording condition is recorded, and a meandering of the track in which the recording condition is recorded, wherein the track record is set by a plurality of record marks and respectively provided in the plural number a data column formed by a complex interval between the recording marks, wherein the recording condition is used to record the data column in the track, and the recording condition includes a parameter for adjusting a terminal position of the cooling pulse wave for recording the pulse waveform. The recording pulse waveform is used to form the recording mark, and the parameter is classified using a combination of the length of the recording mark and the length of the space between the position adjacent to or behind the recording mark. 16. The reproduction device of the information recording medium of claim 15 of the patent application, wherein the reproduction device has a reproduction signal processing unit, and the reproduction signal processing unit can perform at least the following: irradiating the laser light to the foregoing The PIC area reproduces the aforementioned disc information and irradiates the laser light to the aforementioned track to reproduce information that has been recorded in accordance with the aforementioned recording conditions. 17. The s recording device is recorded on the information recording medium according to the record 99 201021037 of the information recording medium. The data is recorded by the plurality of recording marks and respectively set in the foregoing plural record. The recording device includes: a reproduction signal processing unit that irradiates a light beam onto the information recording medium to reproduce the recording condition; and a δ recording control unit that sets the information according to the recording condition Recorded in the information recording medium, the recording condition includes a parameter for adjusting a position of a terminal end of a cooling pulse wave for recording a pulse waveform, wherein the recording pulse waveform is used to form the record mark, and the parameter uses the record mark The length is classified as a combination of the length of the space adjacent to the position before or after the recording mark. 18. An evaluation device for evaluating an information recording medium recorded with a recording parameter for recording a data column, the data column being composed of a plurality of recording marks and respectively disposed between the plurality of recording marks a plurality of intervals, wherein the recording condition includes a parameter for adjusting a terminal position of a cooling pulse wave for recording a pulse waveform, wherein the recording pulse waveform is used to form the record mark, wherein the parameter uses a length of the record mark, The classifier is classified according to the combination of the lengths of the positions adjacent to the position before or after the recording mark, 201021037. The evaluation device includes a reproduction signal processing unit that reproduces signals from the information recording medium. Using the P RML signal processing method to generate a digital signal, the binary signal is decoded by the digital signal, and the first state transition column and the second sure second state transition column are calculated from the binary signal respectively. The difference between the reproduced signals, that is, the difference metric is separately calculated to detect the edge shift, according to the aforementioned edge The edge shift determines whether the aforementioned information recording medium satisfies the predetermined quality. A recording and reproducing apparatus for performing at least one of reproducing or recording an information recording medium that satisfies a predetermined quality by an evaluation apparatus of claim 18 of the patent application. 101